B2
Unitree's heavy industrial quadruped, an IP67 robot aimed at the same inspection jobs as Spot at a lower list price. It carries over 40 kg while walking and runs more than five hours unloaded. It shares firmware security flaws with the Go2 and is not a consumer product.
- Price
- $100,000Shipped Listed at $100,000 on Unitree's US store; resellers quote roughly $77,000-$95,000 for base and lidar builds, and far more fully configured.
- Status
- ShippingShipped Launched November 2023 for industrial inspection and load carrying
- Height
- 0.65 m
- Weight
- 60 kg
- Payload
- 40 kg
- Runtime
- 5 h
- Top speed
- 6 m/s
- Degrees of freedom
- —
- Compute
- Intel Core i5 standard; optional Intel Core i7 or NVIDIA Orin NX
- Made in
- China
A dash means the maker has not published it. Values with a label are claims, not measurements.
Trust and legalWhat these mean
Does a remote human drive it?
Partly
Remote-controlled or run on programmed inspection routes; autonomy depends on optional lidar and compute modules.
US FCC
Authorized
FCC ID 2A5PE-YUSHU006 (quadruped robot, granted 2023-10-16 per FCC ID listings). Authorized before 2026-07-28; Unitree says B2 holds FCC authorization and may continue to be sold.
Known security issues
Affected by UniPwn (Sept 2025): hard-coded BLE keys (CVE-2025-60250) and Wi-Fi setup command injection (CVE-2025-35027) allow root takeover over Bluetooth.
Status history4 dated events
- Shipping
Unitree's prospectus says Go2, B2, A2, G1, H2 and R1 all hold FCC authorization, so they can keep selling in the US after the July 28 Covered List update; future models face uncertainty China's Unitree Robotics flags risks to future US sales under FCC restrictions (Global Times)
- Shipping
UniPwn Bluetooth root exploit disclosed for Go2, G1, H1 and B2 UniPwn (GitHub)
- Shipping
Unitree releases the B2 industrial quadruped Unitree Robotics Releases Industrial Quadruped Robot B2 (Unitree)
- Announced
FCC grants authorization for Unitree quadruped 2A5PE-YUSHU006 (B2) FCC ID 2A5PE-YUSHU006 Quadruped Robot (fccid.io)
PromisesLedger
Sources for specs and status
- Unitree B2 product page27 Sep 2026
- Unitree online store (all products)27 Sep 2026
- Unitree Robotics Releases Industrial Quadruped Robot B2 (Unitree)3 Nov 2023
- UniPwn: BLE root exploit for Unitree Go2, G1, H1, B2 (GitHub, Bin4ry)20 Sep 2025
- China's Unitree Robotics flags risks to future US sales under FCC restrictions (Global Times)31 Jul 2026
Last updated 27 Sep 2026. Spotted an error? Send a correction.