Solar powered , learn the gear-shaft transmission system by assemlby work and play . Creative deising and eco friendly.

Features:

Lenth: 300mm  Beam: 100mm

Solar Panel :  2.5V / 150 mA

Sophisticated Moulding work .  All the material are philate-free .

Can play both at home in bathroom ( with 2 AA batteries) or outside  .

For school to hold competition , our 6x 3 M pool is recommended .