100% brand new and high quality.
Size: 22 x 12xm(L x W); Wheel Size: 6.5cm (Dia.) x 2.7cm (H)
Mechanical structure is simple, it is easy to install.
With a 4 AA battery box and power switch. (Batteries not included.)
Can be used for distance measurement, velocity.
Gear Motor reduction radio: 1:48.
Can use with other devices to realize function of tracing, obstacle avoidance, distance testing, speed testing, wireless remote control.
The Kit includes the following items unassembled: