Specially designed for , trigger feel, do not block the screen, do not block the keys, suitable for most mobile phones. Physical pressure, sensitive without delay. Large cooler fan, keep your phone in good state. Ergonomic grip, comfortable to play games. Battery type can charge your phone conveniently and has short-circuit protection function for more safety. Model Number:AK77 Interface Type:USB Model Number:Cooling Fan Gamepad Suitable Phone Width:67-90mm Features:Phone Cooler, Sensitive, 6 Finger Operation Life Time: 33 Hours Type: Battery 4000mAh colour:Photo color Material:ABS+metal size:13 x 17 x 5.5cm Package Contents: 1 x Game Trigger Phone Cooler Fan 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.