Product name: Violent fan Motor speed: 130,000 rpm Wind pressure: about 140g Motor power: 220W Maximum battery: 18650-2600MAH/7.4V5C Two 18650 2600mah in series (7.4 volts) 5C power cells Charging: 5V-2A Charging lights up red, Full turns to green Fast charging: 5V/15W charging lights up red, Full turns to green Battery life: 1st gear battery life about 100 minutes 2nd gear battery life about 40 minutes 3rd gear battery life 13-15 minutes Continuous use time 13-15 minutes Instructions for use: Press and hold for maximum wind speed. Press twice quickly to start the , press to start the second gear. Press to start the third gear. Press the gears again to cycle. The red light turns on when charging, and the green light turns on when fully . Colour:Black Material:plastic Package Contents: 1 x turbo fan 1 x data cable 1 x storage box 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.