Specially designed for gaming, provides trigger feel without blocking the screen or keys, compatible with most mobile phones. Physical pressure design offers responsive and delay-free performance. Equipped with a large cooling fan to keep your phone in optimal condition. Ergonomic grip for comfortable gameplay. Built-in battery allows convenient charging and features short-circuit protection for enhanced safety. Model Number: AK77 Interface Type: USB Model Name: Cooling Fan Gamepad Suitable Phone Width: 67-90mm Features: Phone Cooler, Sensitive Response, 6-Finger Operation Battery Life: Up to 33 hours Battery Type: 4000mAh Color: As shown in photo Material: ABS + Metal Dimensions: 13 x 17 x 5.5 cm Package Contents: 1 x Game Trigger Phone Cooler Fan Note: Other items not included. Note: Light and display differences may cause slight color variation between the image and the actual item. Measurement may vary by +/- 1-3 cm.