Stretchable Grip - Telescopic mobile gaming controller suitable for phones of 3.5-6.5inch, it extends your phone into a traditional controller, more comfortable for your hands, never get hands cramps after long time play; works for Sumsung galaxy / LG/ HTC/ Sony/ Nokia/ Motorola/ Huawei/ Xiaomi/ HTC/ nova/iPhone XR/ iPhone X/ iPhone XS/ iPhone 8. Not support MTK device.  Mobile Gamepad for Android and iOS iPhone - Support Android 4.0, iOS 11.0~13.3 and for Windows operate sysytem and so on. Built-in wireless Bluetooth, can support 2~10 meters wide range of control from the operation. 3 Modes Android/IOS/HID meet all your needs; With Bluetooth technology, new way to play your favorite FPS games such as PUBG, Arena of Valor, Mobile Legend as long as the game allows customize the keys. Customize Keys Mapping for Mobile Games - Just download “ShootingPlus V3” APP on Apple store or Google Play, wireless Bluetooth connect your phone to the mobile controller, customize settings options to optimize functionality to meet all your needs, enhance great game experience when you play MOBA and FPS games. Long Standby - Built in with 350Mah rechargeable Li battery, fast charging the controller about 2 hours to keep playing mobile game 12-15 hours. Please don’t hesitate to contact with us if the controller has any problems, we promise will do our best to provide you with satisfactory after-sale service. Notice: the turn on button is on the left side of controller.