Humanoid & robot atlas
B2-W
Photo: Unitree Robotics (official image), from unitree.com. Image policy
CommercialChinaAssisted

Unitree Robotics · robot dog

B2-W

A wheel-footed version of the B2 that can carry 40 kg. Press reports of its top speed conflict.

Price
—not published by Unitree
Height
—Not published
Weight
—Not published
Payload
40 kgCarries more than 85%
Speed
—Not published
Battery
—Not published
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Why it matters

A wheel-legged industrial dog shown fording rivers, doing flips and carrying a rider.

Real-world use

Unitree said it had been in mass production for a year before the December 2024 video.

Timeline

First shown
2024-12
Released
2023
Unitree video release

Maker

Unitree RoboticsCompany · founded 2016 · Hangzhou, China

Public company: listed on Shanghai's STAR Market on 19 Aug 2026 (688836.SH), raising about 6.1 billion yuan at 150.80 yuan a share; earlier…

How it stacks up

Against other robot dogs that publish the figure. Pick a measure.

  1. B2-WUnitree Robotics · 202440 kg
  2. B2Unitree Robotics · 202340 kg
  3. A2 (Stellar Hunter)Unitree Robotics · 202525 kg
  4. Robot wolfChina South Industries Group · 202420 kg
  5. RBQ-10Rainbow Robotics · 202415 kg
  6. LYNX M20DEEP Robotics · 202515 kg
  7. Go2Unitree Robotics · 202312 kg
  8. D1 (Pro, Edu, Ultra, Max)AgiBot (Zhiyuan Robotics) · 20245 kg

B2-W carries more than 85% of the 27 other robot dogs that publish a payload. Bars show the 7 closest in date.

Payload 40 kg 0.5 kg150 kg #5 of 28 · carries more than 85%

Not published by the maker: height, weight, speed, joints, battery, price.

Public attention

How much public attention B2-W gets, from open data.

  • No Wikipedia article of its own yet
  • 1 news story from reputable press listed on this page

Measures how much people read and write about a robot, not how good it is. Measured 2026-10-14; same method for every robot. How it is measured

What’s inside

The parts the company has talked about publicly.

Movement
Wheel-legs
How it runs
Assisted. Usually driven with a remote controller while it balances and rolls or walks itself.
Chip
Jetson Orin NX (NVIDIA)Optional Core i7 or Jetson Orin NX, up to three computers.
Actuators & motors
Unitree's own high-performance leg joints with powered wheels at the feet
Compute
Intel Core i5 (platform) and Intel Core i7 (user development) as standard; optional Core i7 or NVIDIA Orin NX, up to three computers
Battery & power
Over 2 kWh at 58 V; about 30 km unloaded or 25 km with 40 kg
Materials & build
IP67
Other details
About 85 kg with battery; carries over 40 kg walking and 120 kg standing; shown spinning, doing handstands and dropping 2.8 m.

Lineage

Every Unitree Robotics machine in order.

  1. XDogXDog2016Retired
  2. LaikagoLaikago2017Discontinued
  3. AlienGoAlienGo2019Discontinued
  4. A1A12020Discontinued
  5. B1B12021Discontinued
  6. Go1Go12021Discontinued
  7. Go2Go22023In service
  8. B2B22023Commercial
  9. No public photo yetWe only show photos we're allowed to useRifle-armed robot dog (Golden Dragon 2024)2024Prototype
  10. Go2-WGo2-W2024Commercial
  11. B2-WB2-W2024Commercial
  12. No public photo yetWe only show photos we're allowed to useA2 (Stellar Hunter)2025Commercial
  13. As2As22026Commercial

Unitree Robotics also makes 8 humanoids. See every Unitree Robotics robot

Watch B2-W

Video: Unitree Robotics on YouTube. Plays from youtube-nocookie.com when you press play.

Made, sold and where

Unit counts are usually company figures; analysts often disagree.

Price
Not publishednot published by Unitree
How to get one
No official buying page found
Built
Unitree said it had been in mass production for about a year by December 2024
Where it is sold or used
Unitree Robotics, Hangzhou, China

News

The latest 1, newest first. Summaries are ours; tap through for the original.

  1. Unitree shows B2-W stunts

    A Unitree video showed the wheel-legged B2-W fording rivers and doing acrobatics; the company said it carries 40 kg.

    China Daily

Side by side with its peers

Picked by the same rules for every robot: another maker’s robot that moves the same way, is at the same stage and does at least one of the same main jobs, first shown within two years. Closer size and price rank higher. How we choose

Full comparison
MeasureB2-WB2-WUnitree RoboticsLynxLynxDEEP RoboticsSame jobs: rescue, inspection · Both on wheels · Both on sale or in pilotsLYNX M20LYNX M20DEEP RoboticsSame jobs: inspection, rescue · Both on wheels · Both on sale or in pilotsPUDU D5PUDU D5Pudu RoboticsSame job: inspection · Both on wheels · Both on sale or in pilots
First shown2024-122024-112025-04-282025-12-03
StatusCommercialCommercialCommercialCommercial
Height——57 cm—
Weight——33 kg—
Joints————
Speed——18 km/h18 km/h
Payload40 kg—15 kg30 kg
Battery——3 h—
Price————

Sources

Figures come from press coverage. Every link below backs something on this page.

China Daily China's robotic dogs (B2-W video coverage) Unitree Robotics Unitree B2-W Unitree Robotics B2-W product page

Photos and logos only identify each robot and its maker. Simbeing is not affiliated with, sponsored by or endorsing any company, and nothing here is advertising. Figures are for statistics only and are not advice of any kind. Terms of use