MAX humanoid robot mid-stride with the HIPROJECT mark on its chest, no background

MAX

UBTECH Walker S2

Suitable for MAX

Two-finger gripper
Dahuan PGC-140-50 · 40–140 N · hod 50 mm · 1,5 kg · 48 V DC · EtherCATGripping force is adjustable; fits the arm end flange.pair
Camera on the robot’s wrist
Intel RealSense D405C · 7–50 cm · 1280×720 @ 30 FPS · H84° × V58° · 42×42×22 mm · USBGives the robot and the operator an extra viewpoint, improving grasp accuracy and success rate.pair
Virtual-reality headset (VR)
Pico 4 UltraSupports upper-body teleoperation.set

Technical data

Height: 176 cm
Weight: 70 kg
Payload: 15 kg
Speed: 2 m/s
Battery swap: < 3 min
Runtime: 24/7

About this model

UBTECH Walker S2

Walker S2 is a humanoid robot developed by UBTECH for smart services and assistance in the home. Its characteristics are advanced bipedal walking, dexterous hand movements and the ability to communicate with people using voice and face recognition.

With improved balance and mobility, Walker S2 can carry out complex tasks such as delivering objects, opening doors and even playing chess.

MAX v gibanju

Three Walker S2 humanoid robots under a clear sky.

The world's first humanoid robot capable of swapping its own battery

Walker S2, overview

Walker S2 humanoid robot standing in a studio, side view.

Full size

Height 176 cm, weight 70 kg, 52 independent axes of motion, humanoid gait, walking speed 2 m/s.

Walker S2 with its torso bent forward, holding a crate behind its back.

Flexible waist

Pitch angle +90° to −35°, rotation angle ±162°.

Close-up of the Walker S2 head with its blue light ring.

Sensing and interaction

LLM (large language model) support, voice interaction, 4-inch round display, face display, four-microphone array, two speakers.

Close-up of a Walker S2 dexterous hand with fingers spread.

4th-generation industrial dexterous hands

11 independent axes of motion, six-sensor tactile array, single-hand grip 7.5 kg, finger grip 1 kg.

Walker S2 torso with black knitted fabric and white shell panels.

Innovative materials

Hybrid rigid-flexible structure, heterogeneous and composite materials, aerospace-grade aluminium alloy, 3D-printed primary frame, 3D-woven high-elasticity fibre material.

Walker S2 inserting a battery into a swap station on a factory floor by itself; the caption on the image is in English.

The world's first 3-minute autonomous battery swap, 24/7 continuous operation

Walker S2 standing beside a tall UBTECH station holding four spare battery drawers.

Real-time battery management; intelligent battery charging

A dual battery hot-swap design lets Walker S2 switch between dual-battery and single-battery operating modes. By integrating real-time battery management with battery swap stations, Walker S2 independently chooses whether to swap or charge the battery according to task priority, achieving dynamic power management.

Walker S2 with its torso rotated while working at warehouse bins; the ±162° caption on the image is in English.

±162° waist rotation angle

Walker S2 in a deep squat, gripping a cardboard box in a bright warehouse.

Deep squat and lifting with a bent spine

With a human-like whole-body dynamic balancing algorithm, Walker S2 reaches a 170° lean and carries a 15 kg load across a 0–1.8 m working range.

Rainbow-coloured depth map of a warehouse scene as the robot’s binocular vision system sees it: near surfaces red and yellow, distant ones blue.

“Human eye” binocular stereoscopic perception

A complete RGB binocular stereo vision solution is built into the head of Walker S2. The in-house passive binocular vision system uses deep-learning depth-estimation algorithms to produce accurate, left-aligned dense depth maps in real time. This lets Walker S2 achieve stereoscopic perception similar to the human eye.

Diagram of the Walker S2 software architecture, with concentric rings around the robot; the labels on the image are in English.

UBTECH's own “Co-Agent”: the world's first industrial agent for humanoid robots

Isometric factory plan with sorting, handling, and assembly and inspection zones staffed by humanoid robots; the labels on the image are in English.

Task-oriented intelligence on the production line: “BrainNet 2.0” and Co-Agents building a dual-loop artificial-intelligence system

Product specifications

Walker S2 technical specifications (PDF)