Charging mini electric fan

Power mode: USB
Rated voltage: 3.7V
Rated power: 4W
Rated frequency: 830ma
Noise: below 36dB
Air supply mode: turn page
Wind speed gear: 3
Operation mode: Mechanical
Speed control gear: three gears
Shaking head: up and down
Color: white, pink, green
Built in battery capacity: 2000mAh