About this item THE GameSir ADVANTAGEGameSir is committed to expanding the boundaries of performance and exploring the possibilities of play,enjoyed by over 30 million users worldwide, our leading technology will change the way you gaming experience. SUPPORTED ANDROID/iOS PHONE GameSir Mobile Trigger is a universal controller compatible with IOS and Android Phones,Suitable for a variety of shooting game, including PUBG, Cod Mobile, Knives Out, Rules of Survival, Survivor Royale, etc. 4 BURST MODESGameSir F4 mobile phone gaming triggers is armed with the selector as the same as the real M4A1 does, which you can select a suitable burst mode according to the battlefield status,Default mode ( one click, one shot),3-bust mode (1 click, 3 shots),6-burst mode ( 1 click, 6 shots),9-burst mode (1 click, 9 shots) . RECHARGEABLE BATTERYF4 falocn pubg controller euipment 90mah battery, the Standby time up to 30~40 hours after full charge 1~2 hours. Fully meet your requirements if you want to play games in long time, bring excellent gaming experience. EASY TO USEGameSirf4 falcon mobile gaming controller do not need to connect bluetooth or any apps,Plug and play gaming trigger,Improve your game experience, to help you be the pro on your game.