Humanoid Database
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Walker S2 (Ubtech)
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SUMMARY:
Walker S2 is a next‑generation humanoid robot developed by UBTECH as a lighter, more efficient, and more deployable variant of its flagship Walker platform. Designed for household assistance, hospitality, office support, and public‑space interaction, Walker S2 focuses on reliability, smooth locomotion, and safe manipulation rather than high‑torque industrial performance.
It represents UBTECH’s push toward practical humanoid deployment in everyday environments.
EDITORIAL:
Walker S2 is UBTECH’s answer to a simple question: What does a humanoid need to be useful today? Not acrobatics. Not extreme torque. Not flashy demos. Just stable walking, reliable hands, and AI that understands the world well enough to help.
Where Walker X is the flagship, Walker S2 is the deployment model — the robot you could actually imagine in a hotel lobby, a smart home, or a corporate workspace. It’s lighter, more efficient, and tuned for long‑duration operation. S2 shows that UBTECH isn’t just building humanoids for research labs; it’s building them for the real world.
Specifications:
PHYSICAL
Height: ~165 cm
Weight: ~60–65 kg
Body Type: Full‑size humanoid
Degrees of Freedom: ~35–38 DOF (varies by configuration)
Frame: Lightweight aluminum + composite shell
Design: Slimmer, energy‑efficient architecture vs. Walker X
MOBILITY
Locomotion: Bipedal walking
Walking Speed: ~1.0–1.2 m/s
Balance System:
Whole‑body control
Dynamic stabilization
Smooth indoor gait
Capabilities:
Walking and turning
Step negotiation
Stable interaction while moving
MANIPULATION
Arms: Electric actuators (service‑class)
Hands:
5‑finger dexterous hands
Simplified mechanics vs. Walker X
Payload: ~2–3 kg per arm
Capabilities:
Picking up household objects
Opening doors
Carrying items
Light tool interaction
ACTUATORS
Type: Electric servo actuators
Joint Torque: Moderate (optimized for safety and efficiency)
Motion Style: Smooth, human‑like, low‑impact
SENSORS
Vision:
RGB cameras
Depth cameras
IMU: Multi‑axis inertial sensing
Force/Torque: Joint‑level sensing
Audio: Microphone array
Touch: Tactile sensors in hands
Proprioception: Full‑body state estimation
AI & COMPUTE
AI Stack:
Vision‑language reasoning
Object recognition
Navigation AI
Human‑robot interaction
Compute: Onboard embedded PC
Connectivity: Wi‑Fi, Ethernet
BATTERY & POWER
Battery Life: ~2–3 hours
Swappable Battery: Yes
Charging: Dock or manual charge
USE CASES
Smart home assistance
Hospitality & concierge tasks
Office support
Retail & public‑space interaction
Education & research
Demonstrations & events
Image: AINewsDailyHub
Company Source:
- UBTECH Robotics – Walker S2 Official Page
https://www.ubtrobot.com/en/humanoid/products/walker-s2
Key News & Coverage:
- Yonhap / PRNewswire – UBTECH Walker S2 Begins Mass Production
https://www.yna.co.kr/view/RPR20251117008200353
- HeyupNow – UBTECH Unveils Walker S2, 1.76m Tall, 24/7 Operation