Power supply / wind speed regulation function: 1) Press the power button once: turn on a soft wind. Usage time: 6 hours and 30 minutes. 2) Press the power button twice: turn on the second natural wind. Usage time: 3 hours. 3) Press the power button three times: turn on the third gear . Usage time: 1 hour 50 minutes 4) Press the power button four times: turn off the power. Main information: Product name : Double Blades tower fan Input voltage: DC 5V Working Temperature: 50 Use : Portable/Desktop Power connection: USB port Charging time : 2 hours and 50 minutes. Material: ABS colour: 1-pink Package Contents: 1 x Rechargeable Tower Table Fan Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.