✔【4 FINGERS OPERATION, AIM AND FIRE WHILE MOVING】:Just use your index fingers to press the L1 R1 triggers, that shooting, aiming, moving, jumping, squatting, and lying operations can be performed at the same time, which can eliminate the trouble that use thumbs only. It is a massive advantage in close range combat because difference in milliseconds can be life or death. Moreover, no disconnection, response delay, root request or system incompatibility issues compared with Bluetooth controllers. ✔【ERGONOMIC CONTROLLER & PHONE SECURE LOCKED IN PLACE】: People may get hands cramps after playing hours of battle royal games with cellphone. DELAM gamepad is specially designed for mobile shooting games, it extends your phone into a traditional Xbox or PS controller, more comfortable for big hands. Phone body and controller are firmly fixed through three contact points covered of rubber pads to prevent the phone sliding, and won't press your on off button and volume keys, or scratch your phone ✔【 HOW TO USE】: Start the game and click Settings - Control - Customize. Move the AIM to the upper left corner. Move the Fire button to the top right corner. [You can adjust these according to your own habits. ] Adjust the shooting and target buttons under the touchpad of the mobile game controller . Save your settings. ✔【TELESCOPIC-BOOM GRIP SUPPORT ALL 4.7-6.5 INCH MOBILE PHONES OF IOS & ANDROID DEVICE】: Work for PUBG Mobile/ Critical Ops/ Rules of Survival/ Knives Out/ Cross Fire ✔ [Powerful sound : dynamic, crystal-clear sound and deep powerful bass with soft silicone, ergonomic earbuds block outside noise and perfect in-ear seal blocks.