Built-in 300mAh lithium battery.
With extending phone holder, extending size from 2.2 - 6.3 inches.
Support playing vertical / horizontal view games on mobile phone and tablet.
With deformation grip, the grip can be adjusted according to different hand size.
Ergonomic design and rubber finishing make comfortable handhold feelings.
Compatible with Android 3.2 above ( for Android Smartphone / Tablet ), iOS 7 or above ( for iPhone / for iPad ) or Smart TV / TV Box with Bluetooth.