Robstep (Chinese: 易步; pinyin: Yì Bù; lit.
[1][2] Computers and motors inside of the device keep the Robstep upright when powered on with balancing enabled.
The Robstep detects, as it balances, the change in its center of mass, and first establishes and then maintains a corresponding speed, forward or backward.
Robsteps are driven by electric motors and can reach a speed of 9.3 miles per hour (15 km/h).
One is considered a dangerous good for airline travel (lithium ion) and the other type is acceptable (nickel metal hydride).