Solar panels: 0.25W/30*30MM
Fan diameter: 63MM
Hat: 610/590/570/550MM
Materials: ABS

1) A cap with a mini fan and adopts energy from sunlight
2) Saving power and environmentally friendly

Features:
1) It's a cap that with a mini fan.
2) There's a solar panel on the top of the cap.
3) The panel generates electricity under sunlight and makes the fan
Work.
4) The fan rotates as soon as you put it under the sun.
5) Then the cap sends you a breeze on a hot day which makes you
Comfortable.
6) It's an excellent partner of you when work under high-temperature, such us buildig site, railway or other constructions.