About
Description
Unitree Robotics -- Official Humanoid Robot
Unitree G1 Edu Ultimate I
G1 Series Education Ultimate I 69 DOF 2x Wuji Hands 1000Hz Control
The most advanced education-focused humanoid robot from Unitree. The G1 Edu Ultimate I includes all features of the G1 Edu Advanced Version and comes equipped with 2x Wuji Five-Finger Dexterous Hand 2 (without haptic feedback, with wrist camera). Featuring an extraordinary 69 total degrees of freedom (29 body + 20 DOF per hand), each hand delivers 20 active DOF with full opposable fingers, lateral movement support, and directly connected rotary joints with backdriving capability. Operating at a 1000 Hz control frequency across 20 axes via EtherNet (1000BASE-T), with MIT force-position hybrid control. Each hand includes an integrated wrist RGB camera with 1920x1080 resolution and 130° diagonal FOV. Designed for cutting-edge research, education, and advanced robotics development. Haptic feedback not included.
69
Total DOF
20
Hand DOF (each)
1000Hz
Control Freq
3.37 lbf
Peak Finger Force
4 cyc/s
Open/Close Speed
18 mo
Warranty
Ultimate I vs. Edu Advanced / Ultimate H: The G1 Edu Ultimate I represents the pinnacle of the G1 education platform, featuring the Wuji Five-Finger Dexterous Hand 2 -- a next-generation hand with 20 active DOF per hand (vs. 1 DOF per Dex1-1 gripper in Ultimate H), bringing the total system to an extraordinary 69 DOF. The Wuji hand operates at 1000Hz control frequency via EtherNet (1000BASE-T) with MIT force-position hybrid control, enabling unprecedented dexterity and responsiveness for advanced research applications.
Haptic Feedback Not Included: This model does not include haptic feedback capabilities. Force and contact estimation must be implemented through motor current feedback and the integrated wrist cameras.
Product Overview
The Unitree G1 Edu Ultimate I is the most advanced education-focused humanoid robot in the G1 series, designed for cutting-edge research, robotics education, and development requiring maximum dexterity. Building on the comprehensive G1 Edu Advanced platform, the Ultimate I variant adds 2x Wuji Five-Finger Dexterous Hand 2 (without haptic feedback, with wrist camera), providing a complete bimanual manipulation system with unprecedented degrees of freedom.
With an extraordinary 69 total degrees of freedom (29 from the humanoid body + 20 per hand), the G1 Edu Ultimate I offers human-like dexterity at the highest level. Each Wuji hand features 20 active DOF with full opposable fingers, lateral movement support, and directly connected rotary joints with backdriving capability. The system operates at a 1000 Hz control frequency across 20 axes via EtherNet (1000BASE-T) with MIT force-position hybrid control. Each hand includes an integrated wrist RGB camera delivering 1920x1080 resolution with a 130° diagonal field of view, enabling advanced vision-based manipulation. The compact hand frame measures 7.28" x 3.15" x 1.57" (185 x 80 x 40 mm) with a minimum grip diameter of 0, enabling precision manipulation of the smallest objects.
69 DOF Complete System
29 body DOF plus 2x 20-DOF Wuji hands deliver an unprecedented level of dexterity. The most capable educational humanoid platform available.
Wuji Five-Finger Dexterous Hand 2
Each hand features 20 active DOF with full opposable fingers, lateral movement, and directly connected rotary joints with backdriving.
1000Hz Control Frequency
Control frequency of 1000Hz across 20 axes via EtherNet (1000BASE-T) enables real-time, responsive manipulation at the highest level.
MIT Force-Position Hybrid Control
Advanced MIT force-position hybrid control mode enables compliant manipulation, safe human interaction, and adaptive grasping.
Integrated Wrist RGB Cameras
Each hand includes a wrist-mounted RGB camera with 1920x1080 resolution and 130° diagonal FOV for vision-based manipulation.
18-Month Warranty
Extended 18-month warranty on the entire unit, reflecting the enterprise-grade nature of this education-focused model.
Wuji Five-Finger Dexterous Hand 2 Specifications
The G1 Edu Ultimate I comes equipped with 2x Wuji Five-Finger Dexterous Hand 2, representing the next generation of dexterous manipulation:
Wuji Five-Finger Dexterous Hand 2 -- Standard Equipment (x2)
- Active Degrees of Freedom: 20 DOF per hand -- unprecedented dexterity for complex manipulation tasks.
- Gripper Configuration: Full opposable fingers with lateral movement support for human-like grasping patterns.
- Kinematics Configuration: Directly connected rotary joints with backdriving capability for compliant, safe interaction.
- Dimensions: 7.28" x 3.15" x 1.57" (185 x 80 x 40 mm) frame -- compact form factor optimized for humanoid integration.
- Minimum Grip Diameter: 0 -- enables precision manipulation of the smallest objects.
- Control Frequency: 1000Hz x 20 axes -- ultra-high-speed control for real-time responsive manipulation.
- Control Mode: MIT force-position hybrid control for compliant and adaptive manipulation.
- Communication Protocol: EtherNet (1000BASE-T) -- high-bandwidth, low-latency communication.
- Peak Finger Force: ≥ 3.37 lbf (≥ 15 N) -- sufficient force for secure grasping of various objects.
- Opening/Closing Speed: ≥ 4 cycles/s -- rapid response for dynamic manipulation tasks.
- Joint Backlash: <1° -- high-precision joint control for accurate manipulation.
- Operating Voltage: 16-58V DC -- wide voltage range compatible with humanoid robot power systems.
Integrated Wrist RGB Camera
Each Wuji Five-Finger Dexterous Hand 2 features an integrated wrist RGB camera, providing critical visual feedback directly at the point of manipulation:
Wrist RGB Camera -- Integrated in Each Hand
- Resolution: 1920 x 1080 (Full HD) -- high-resolution imagery for detailed object recognition and inspection.
- Field of View: Diagonal 130°, Horizontal 120°, Vertical 81° -- wide coverage of the manipulation workspace.
- On-Hand Vision: Camera positioned at the wrist provides first-person view of the manipulation workspace, enabling precise object identification and positioning.
- Object Recognition: RGB imagery supports real-time object classification, color detection, and feature identification during manipulation tasks.
- Visual Servoing: Close-proximity camera enables visual feedback control loops for precision grasping, alignment, and placement operations.
- Bimanual Vision: Two cameras (one per hand) provide stereoscopic-like coverage for coordinated bimanual manipulation tasks.
Advanced Control Architecture
The Wuji Five-Finger Dexterous Hand 2 features a state-of-the-art control system:
1000Hz x 20 Axes Control
Ultra-high-frequency control across all 20 axes enables real-time responsive manipulation, critical for dynamic tasks and safe human interaction.
MIT Force-Position Hybrid Control
Advanced hybrid control mode combines force and position control for compliant manipulation, enabling safe interaction with humans and delicate objects.
EtherNet (1000BASE-T)
High-bandwidth Gigabit Ethernet communication ensures low-latency data transfer for real-time control and high-speed sensor feedback.
Backdriving Capability
Directly connected rotary joints support backdriving, enabling compliant behavior and safe physical human-robot interaction.
<1° Joint Backlash
High-precision joints with minimal backlash ensure accurate positioning and repeatable manipulation performance.
≥ 4 Cycles/s Speed
Rapid opening and closing speed enables dynamic grasping and release operations for time-critical manipulation tasks.
G1 Edu Advanced Base Features
The G1 Edu Ultimate I includes all features of the G1 Edu Advanced Version, providing a comprehensive humanoid platform:
Education-Focused Design
Specifically designed for robotics education, research, and development. Includes comprehensive documentation and development support.
Advanced Motion Library
Includes pre-programmed motions and behaviors for immediate demonstration and educational use.
Development Support
Full SDK and API access for custom application development, research projects, and educational curricula.
Comprehensive Sensing
Integrated sensors for perception, balance, and interaction, enabling advanced research in humanoid robotics.
What's Included
The G1 Edu Ultimate I package contains the following components:
| Robot | G1 Edu Ultimate I Humanoid | Complete humanoid robot with 69 DOF, including all G1 Edu Advanced features and 2x Wuji Five-Finger Dexterous Hand 2 with wrist cameras. |
| Hands | Wuji Five-Finger Dexterous Hand 2 (x2) | Two Wuji hands with 20 active DOF each, full opposable fingers, lateral movement, backdriving, 1000Hz control via EtherNet, and integrated wrist RGB cameras. |
| Documentation | Development Documentation | Comprehensive documentation, SDK reference, API documentation, and educational materials. |
| Warranty | 18-Month Warranty | 18-month warranty on the entire unit, covering manufacturing defects and normal operational use. |
Important Notes
- G1 Edu Advanced Base: Includes all features of the G1 Edu Advanced Version. Refer to G1 Edu Advanced specifications for full robot capabilities.
- Dual Wuji Hands: Comes with 2x Wuji Five-Finger Dexterous Hand 2 for complete bimanual manipulation capability with 20 DOF per hand.
- Wrist Cameras: Each hand includes an integrated wrist RGB camera with 1920x1080 resolution and 130° diagonal FOV.
- Haptic Feedback: Haptic feedback is NOT included in this model. Force estimation must be implemented through motor current feedback and vision systems.
- Hand Specifications: Each Wuji hand: 7.28" x 3.15" x 1.57" (185 x 80 x 40 mm) frame, 20 active DOF, ≥ 3.37 lbf (≥ 15 N) peak finger force, ≥ 4 cycles/s opening/closing speed.
- Control System: 1000Hz control frequency x 20 axes via EtherNet (1000BASE-T) with MIT force-position hybrid control.
- Joint Backlash: <1° joint backlash ensures high-precision manipulation.
- Operating Voltage: 16-58V DC -- wide voltage range compatible with humanoid robot power systems.
- Development: Full support for secondary development and custom applications.
- Warranty: 18-month warranty on the entire unit.
Technical Specifications
| Product Name | G1 Edu Ultimate I |
| Product Series | Unitree G1 Education Series |
| Total Degrees of Freedom | 69 (29 body + 2x 20 DOF Wuji hands) |
| Base Platform | G1 Edu Advanced Version (all features included) |
| Hand Model | Wuji Five-Finger Dexterous Hand 2 (x2) |
| Hand Active DOF | 20 per hand |
| Gripper Configuration | Full opposable fingers, supports lateral movement |
| Kinematics Configuration | Directly connected rotary joints, supports backdriving |
| Hand Dimensions (Frame) | 7.28" x 3.15" x 1.57" (185 x 80 x 40 mm) |
| Minimum Grip Diameter | 0 |
| Control Frequency | 1000 Hz x 20 axes |
| Control Mode | MIT force-position hybrid control |
| Communication Protocol | EtherNet (1000BASE-T) |
| Peak Finger Force | ≥ 3.37 lbf (≥ 15 N) |
| Opening/Closing Speed | ≥ 4 cycles/s |
| Joint Backlash | <1° |
| Operating Voltage | 16-58V DC |
| Wrist Camera | RGB camera included (per hand) |
| Camera Resolution | 1920 x 1080 |
| Camera FOV | Diagonal: 130°, Horizontal: 120°, Vertical: 81° |
| Haptic Feedback | Not included |
| Secondary Development | Supported |
| Warranty | 18 months on the entire unit |
* Specifications are based on manufacturer data and may vary slightly by production batch.
* The G1 Edu Ultimate I includes all features of the G1 Edu Advanced Version plus 2x Wuji Five-Finger Dexterous Hand 2 with wrist cameras.
* Haptic feedback is not included. Force estimation must be implemented through motor current feedback and vision systems.
* Each hand includes an integrated wrist RGB camera with 1920x1080 resolution.
* Hand specifications: 7.28" x 3.15" x 1.57" (185 x 80 x 40 mm) frame, 20 active DOF per hand, ≥ 3.37 lbf (≥ 15 N) peak finger force.
* Camera specifications: 1920x1080 resolution, 130° diagonal FOV, 120° horizontal, 81° vertical.
* Control frequency: 1000Hz x 20 axes via EtherNet (1000BASE-T) with MIT force-position hybrid control.
* Operating voltage: 16-58V DC. Joint backlash: <1°. Opening/closing speed: ≥ 4 cycles/s.
* Secondary development is supported. Full SDK and API access provided.
* Unitree is a registered trademark of Unitree Robotics. Wuji is a trademark of the respective manufacturer.
Description
Unitree Robotics -- Official Humanoid Robot
Unitree G1 Edu Ultimate I
G1 Series Education Ultimate I 69 DOF 2x Wuji Hands 1000Hz Control
The most advanced education-focused humanoid robot from Unitree. The G1 Edu Ultimate I includes all features of the G1 Edu Advanced Version and comes equipped with 2x Wuji Five-Finger Dexterous Hand 2 (without haptic feedback, with wrist camera). Featuring an extraordinary 69 total degrees of freedom (29 body + 20 DOF per hand), each hand delivers 20 active DOF with full opposable fingers, lateral movement support, and directly connected rotary joints with backdriving capability. Operating at a 1000 Hz control frequency across 20 axes via EtherNet (1000BASE-T), with MIT force-position hybrid control. Each hand includes an integrated wrist RGB camera with 1920x1080 resolution and 130° diagonal FOV. Designed for cutting-edge research, education, and advanced robotics development. Haptic feedback not included.
69
Total DOF
20
Hand DOF (each)
1000Hz
Control Freq
3.37 lbf
Peak Finger Force
4 cyc/s
Open/Close Speed
18 mo
Warranty
Ultimate I vs. Edu Advanced / Ultimate H: The G1 Edu Ultimate I represents the pinnacle of the G1 education platform, featuring the Wuji Five-Finger Dexterous Hand 2 -- a next-generation hand with 20 active DOF per hand (vs. 1 DOF per Dex1-1 gripper in Ultimate H), bringing the total system to an extraordinary 69 DOF. The Wuji hand operates at 1000Hz control frequency via EtherNet (1000BASE-T) with MIT force-position hybrid control, enabling unprecedented dexterity and responsiveness for advanced research applications.
Haptic Feedback Not Included: This model does not include haptic feedback capabilities. Force and contact estimation must be implemented through motor current feedback and the integrated wrist cameras.
Product Overview
The Unitree G1 Edu Ultimate I is the most advanced education-focused humanoid robot in the G1 series, designed for cutting-edge research, robotics education, and development requiring maximum dexterity. Building on the comprehensive G1 Edu Advanced platform, the Ultimate I variant adds 2x Wuji Five-Finger Dexterous Hand 2 (without haptic feedback, with wrist camera), providing a complete bimanual manipulation system with unprecedented degrees of freedom.
With an extraordinary 69 total degrees of freedom (29 from the humanoid body + 20 per hand), the G1 Edu Ultimate I offers human-like dexterity at the highest level. Each Wuji hand features 20 active DOF with full opposable fingers, lateral movement support, and directly connected rotary joints with backdriving capability. The system operates at a 1000 Hz control frequency across 20 axes via EtherNet (1000BASE-T) with MIT force-position hybrid control. Each hand includes an integrated wrist RGB camera delivering 1920x1080 resolution with a 130° diagonal field of view, enabling advanced vision-based manipulation. The compact hand frame measures 7.28" x 3.15" x 1.57" (185 x 80 x 40 mm) with a minimum grip diameter of 0, enabling precision manipulation of the smallest objects.
69 DOF Complete System
29 body DOF plus 2x 20-DOF Wuji hands deliver an unprecedented level of dexterity. The most capable educational humanoid platform available.
Wuji Five-Finger Dexterous Hand 2
Each hand features 20 active DOF with full opposable fingers, lateral movement, and directly connected rotary joints with backdriving.
1000Hz Control Frequency
Control frequency of 1000Hz across 20 axes via EtherNet (1000BASE-T) enables real-time, responsive manipulation at the highest level.
MIT Force-Position Hybrid Control
Advanced MIT force-position hybrid control mode enables compliant manipulation, safe human interaction, and adaptive grasping.
Integrated Wrist RGB Cameras
Each hand includes a wrist-mounted RGB camera with 1920x1080 resolution and 130° diagonal FOV for vision-based manipulation.
18-Month Warranty
Extended 18-month warranty on the entire unit, reflecting the enterprise-grade nature of this education-focused model.
Wuji Five-Finger Dexterous Hand 2 Specifications
The G1 Edu Ultimate I comes equipped with 2x Wuji Five-Finger Dexterous Hand 2, representing the next generation of dexterous manipulation:
Wuji Five-Finger Dexterous Hand 2 -- Standard Equipment (x2)
- Active Degrees of Freedom: 20 DOF per hand -- unprecedented dexterity for complex manipulation tasks.
- Gripper Configuration: Full opposable fingers with lateral movement support for human-like grasping patterns.
- Kinematics Configuration: Directly connected rotary joints with backdriving capability for compliant, safe interaction.
- Dimensions: 7.28" x 3.15" x 1.57" (185 x 80 x 40 mm) frame -- compact form factor optimized for humanoid integration.
- Minimum Grip Diameter: 0 -- enables precision manipulation of the smallest objects.
- Control Frequency: 1000Hz x 20 axes -- ultra-high-speed control for real-time responsive manipulation.
- Control Mode: MIT force-position hybrid control for compliant and adaptive manipulation.
- Communication Protocol: EtherNet (1000BASE-T) -- high-bandwidth, low-latency communication.
- Peak Finger Force: ≥ 3.37 lbf (≥ 15 N) -- sufficient force for secure grasping of various objects.
- Opening/Closing Speed: ≥ 4 cycles/s -- rapid response for dynamic manipulation tasks.
- Joint Backlash: <1° -- high-precision joint control for accurate manipulation.
- Operating Voltage: 16-58V DC -- wide voltage range compatible with humanoid robot power systems.
Integrated Wrist RGB Camera
Each Wuji Five-Finger Dexterous Hand 2 features an integrated wrist RGB camera, providing critical visual feedback directly at the point of manipulation:
Wrist RGB Camera -- Integrated in Each Hand
- Resolution: 1920 x 1080 (Full HD) -- high-resolution imagery for detailed object recognition and inspection.
- Field of View: Diagonal 130°, Horizontal 120°, Vertical 81° -- wide coverage of the manipulation workspace.
- On-Hand Vision: Camera positioned at the wrist provides first-person view of the manipulation workspace, enabling precise object identification and positioning.
- Object Recognition: RGB imagery supports real-time object classification, color detection, and feature identification during manipulation tasks.
- Visual Servoing: Close-proximity camera enables visual feedback control loops for precision grasping, alignment, and placement operations.
- Bimanual Vision: Two cameras (one per hand) provide stereoscopic-like coverage for coordinated bimanual manipulation tasks.
Advanced Control Architecture
The Wuji Five-Finger Dexterous Hand 2 features a state-of-the-art control system:
1000Hz x 20 Axes Control
Ultra-high-frequency control across all 20 axes enables real-time responsive manipulation, critical for dynamic tasks and safe human interaction.
MIT Force-Position Hybrid Control
Advanced hybrid control mode combines force and position control for compliant manipulation, enabling safe interaction with humans and delicate objects.
EtherNet (1000BASE-T)
High-bandwidth Gigabit Ethernet communication ensures low-latency data transfer for real-time control and high-speed sensor feedback.
Backdriving Capability
Directly connected rotary joints support backdriving, enabling compliant behavior and safe physical human-robot interaction.
<1° Joint Backlash
High-precision joints with minimal backlash ensure accurate positioning and repeatable manipulation performance.
≥ 4 Cycles/s Speed
Rapid opening and closing speed enables dynamic grasping and release operations for time-critical manipulation tasks.
G1 Edu Advanced Base Features
The G1 Edu Ultimate I includes all features of the G1 Edu Advanced Version, providing a comprehensive humanoid platform:
Education-Focused Design
Specifically designed for robotics education, research, and development. Includes comprehensive documentation and development support.
Advanced Motion Library
Includes pre-programmed motions and behaviors for immediate demonstration and educational use.
Development Support
Full SDK and API access for custom application development, research projects, and educational curricula.
Comprehensive Sensing
Integrated sensors for perception, balance, and interaction, enabling advanced research in humanoid robotics.
What's Included
The G1 Edu Ultimate I package contains the following components:
| Robot | G1 Edu Ultimate I Humanoid | Complete humanoid robot with 69 DOF, including all G1 Edu Advanced features and 2x Wuji Five-Finger Dexterous Hand 2 with wrist cameras. |
| Hands | Wuji Five-Finger Dexterous Hand 2 (x2) | Two Wuji hands with 20 active DOF each, full opposable fingers, lateral movement, backdriving, 1000Hz control via EtherNet, and integrated wrist RGB cameras. |
| Documentation | Development Documentation | Comprehensive documentation, SDK reference, API documentation, and educational materials. |
| Warranty | 18-Month Warranty | 18-month warranty on the entire unit, covering manufacturing defects and normal operational use. |
Important Notes
- G1 Edu Advanced Base: Includes all features of the G1 Edu Advanced Version. Refer to G1 Edu Advanced specifications for full robot capabilities.
- Dual Wuji Hands: Comes with 2x Wuji Five-Finger Dexterous Hand 2 for complete bimanual manipulation capability with 20 DOF per hand.
- Wrist Cameras: Each hand includes an integrated wrist RGB camera with 1920x1080 resolution and 130° diagonal FOV.
- Haptic Feedback: Haptic feedback is NOT included in this model. Force estimation must be implemented through motor current feedback and vision systems.
- Hand Specifications: Each Wuji hand: 7.28" x 3.15" x 1.57" (185 x 80 x 40 mm) frame, 20 active DOF, ≥ 3.37 lbf (≥ 15 N) peak finger force, ≥ 4 cycles/s opening/closing speed.
- Control System: 1000Hz control frequency x 20 axes via EtherNet (1000BASE-T) with MIT force-position hybrid control.
- Joint Backlash: <1° joint backlash ensures high-precision manipulation.
- Operating Voltage: 16-58V DC -- wide voltage range compatible with humanoid robot power systems.
- Development: Full support for secondary development and custom applications.
- Warranty: 18-month warranty on the entire unit.
Technical Specifications
| Product Name | G1 Edu Ultimate I |
| Product Series | Unitree G1 Education Series |
| Total Degrees of Freedom | 69 (29 body + 2x 20 DOF Wuji hands) |
| Base Platform | G1 Edu Advanced Version (all features included) |
| Hand Model | Wuji Five-Finger Dexterous Hand 2 (x2) |
| Hand Active DOF | 20 per hand |
| Gripper Configuration | Full opposable fingers, supports lateral movement |
| Kinematics Configuration | Directly connected rotary joints, supports backdriving |
| Hand Dimensions (Frame) | 7.28" x 3.15" x 1.57" (185 x 80 x 40 mm) |
| Minimum Grip Diameter | 0 |
| Control Frequency | 1000 Hz x 20 axes |
| Control Mode | MIT force-position hybrid control |
| Communication Protocol | EtherNet (1000BASE-T) |
| Peak Finger Force | ≥ 3.37 lbf (≥ 15 N) |
| Opening/Closing Speed | ≥ 4 cycles/s |
| Joint Backlash | <1° |
| Operating Voltage | 16-58V DC |
| Wrist Camera | RGB camera included (per hand) |
| Camera Resolution | 1920 x 1080 |
| Camera FOV | Diagonal: 130°, Horizontal: 120°, Vertical: 81° |
| Haptic Feedback | Not included |
| Secondary Development | Supported |
| Warranty | 18 months on the entire unit |
* Specifications are based on manufacturer data and may vary slightly by production batch.
* The G1 Edu Ultimate I includes all features of the G1 Edu Advanced Version plus 2x Wuji Five-Finger Dexterous Hand 2 with wrist cameras.
* Haptic feedback is not included. Force estimation must be implemented through motor current feedback and vision systems.
* Each hand includes an integrated wrist RGB camera with 1920x1080 resolution.
* Hand specifications: 7.28" x 3.15" x 1.57" (185 x 80 x 40 mm) frame, 20 active DOF per hand, ≥ 3.37 lbf (≥ 15 N) peak finger force.
* Camera specifications: 1920x1080 resolution, 130° diagonal FOV, 120° horizontal, 81° vertical.
* Control frequency: 1000Hz x 20 axes via EtherNet (1000BASE-T) with MIT force-position hybrid control.
* Operating voltage: 16-58V DC. Joint backlash: <1°. Opening/closing speed: ≥ 4 cycles/s.
* Secondary development is supported. Full SDK and API access provided.
* Unitree is a registered trademark of Unitree Robotics. Wuji is a trademark of the respective manufacturer.
Unitree
by
Unitree
Unitree G1 EDU Ultimate I Humanoid Robot
SKU:
G1edu-I-U15
- Regular price
- $79,705.00
- Sale price
- $79,705.00
- Regular price
-
Shipping calculated at checkout.
Providing the best new Tech Experience, Energy Independence and Robotics Ways of Optimisation
Providing the best new Tech Experience, Energy Independence and Robotics Ways of Optimisation
Packaging note:
Equipment is being supplied in a manufacturer packaging
