The B2-W puts wheels on the feet of Unitree's heavy industrial quadruped, and the trade shows up directly in the numbers: total weight rises to about 85 kg, top speed reaches 15 km/h and range grows to roughly 30 km unloaded or 25 km carrying 40 kg. Payload matches the legged B2 — more than 40 kg walking, up to 120 kg standing — and protection stays at IP67. Crucially the legs still work as legs: the machine climbs 20-25 cm stairs continuously and handles slopes beyond 45 degrees, which is what separates a wheeled-legged robot from a rugged rover. Onboard computing is an Intel Core i5 for platform functions with an i7 or Jetson Orin NX available for user development.