Battery Voltage:3.7V Working Power:1st speed-0.7W; 2nd speed-1.5W; 3rd speed-2.5W Indicator LED: 1.Charging Indicator(red light):The red light is on during charging;Light off when full . 2.Working Indicator(blue light):speed-1,weak light; speed-2,less bright ; speed-3,bright. Charging Current/Time: Using Time: speed-1: .6.5H; speed-2: .3H; speed-3: .2H. Maintenance: 1.Please charge the fan over 2H before first using. 2.Make a charging when not use the fan for three months to avoid damage of battery. 3.Don't allow single use for children under age of 6. Colour: White Material: ABS+PP Size: 60 x 90 x 221mm Package Contents: 1 x fan 1 x USB cable 1 x Chinese and English Instructions Only the above package content, other products are not included. Note: Light 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.