Power supply: USB
Noise: less than 36dB
Colors: X27 white, X27 blue, X27 iron gray, X25 white, X25 blue, X25 iron gray
OEM support: Yes
Built-in battery capacity: 2000mA-4000mA
Rated power: 4.1W
Built-in battery: Built-in battery
Operation mode: mechanical
Rated voltage: 5V
Wind selection: natural wind
Type of air supply: natural wind