This mobile gaming controller will definitely improve your gaming experience.Good Compatibility - This set of mobile game controller are designed for 4.5-6.5 inches roid phones. Mobile gaming joystick controller is triggered physically,it has no any effect on the screen.It is easy to setting use.Versatility - This Mobile game controller suite for various games especially for PUBG, Knives Out, Rules of Survival, , Critical Ops.Portable Design - This mobile game trigger controller with a plastic box. tiny to carry with play games anywhere anytime.Top Features for Mobile Game ControllerUsing Instructions: Before playing game, customize your Fire Aim buttons under the Touch-pad of the knives out game controller. With the PUBG Mobile Controller, you can simultaneously move, turn, aim by using the index fingers to press the buttons, which can eliminate the trouble that use thumbs only to make all operations.When the installation is completed, you need to lock your screen, Start game again then these buttons will work normally. According to different mobile phones models, It may have position deviation shown in the picture, please adjust your button in a comfortable way.HOW TO USE THE MOBILE GAME TRIGGERS?1. Start your game, clicks the Settings-Control-Customize;2. Move the "FIRE" button to the top of left corner;3. Move the "AIM" button to the top of right corner;4. Adjust the aim buttons under the touchpad,of the cell phone game controller;5. "Save" your settings.Color: black redmaterial: plasticsize: 532cmPackage Contents: 1 pair mobile game controller(L1,R1), with plastic boxOnly the above package content, other products are not included.Note: Light different displays may cause the color of the item in the picture a little different from e real thing. The measurement allowed error is 1-3cm.