Unique structure: Using a three-part structure, the maximum distance can reach 16 cm. Good power supply size, can hold the phone tightly. Use a stainless steel sheet to paste on the plastic box, the gamepad looks high-end. The left and right asymmetrical joystick design gives people a unique sense of gaming experience. Using crystal button design, good game handle visual effect. Use the trigger button design, it feels good to play, using the touch switch button instead of the lead resin button, the stroke is short and the action is faster. specification: Support system: IOS \/ Android Connection method: Bluetooth MPN: Not applicable Additional function: stretch Material: ABS Battery capacity: 300m. Ah Charging voltage: 4.8-5.2V Working time: 12 hours Charging time: 1-1.5 hours Product size: 19 * 13 * 4.5CM 2 kinds to choose from: black, red + blue Applicable mobile version: for iOS 7.1 and higher\/for Android 4.4 and higher Note: Not suitable for iOS 13.4 and later! Package Included: 1 *Gamepad 1 *Charging cable 1 *User Manual note: 1. Please note that the actual size is not shown in the photo, please refer to the description for details about the size. 2. Because it is manual measurement, please allow 1-3mm spacing, thank you. 3. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 4. Due to different lighting and screen settings, the color of the item may be slightly different from the picture. Due to different manual measurement methods, please allow slightly different dimensions. Mobile game trigger handle is ergonomically shape and fits perfectly on the hand, making it easy to hold even when used for long periods of time without fatigue