It is so convenient to put it anywhere, such as on the wrist, bicycle, on the chair, baby-carriage, dormitory bed and sun umbrella…
Specifications:
Rated input: DC5V/1A
Battery capacity: 2000mAh
Transmission gear: 3 gears
Battery life: 2-6 hours
if you buy this bullshit you're friggin' moron
come on now wtf is this