Features: 1. Creative playIt will simulate the experience of a game controller and take your gaming skills to the next level. 2. Meticulous workmanshipL1R1 mobile triggers are sensitive to shoot and aim, no Power supply and driver needed, easy to use and high precision, increase your game score. 3. Easy to Install: Mobile controller work with your bumper case on your phone but most cases you will have to remove to use just like any other triggers. Description: With the mobile controller, you can simultaneously move, turn, aim and shoot by using the index fingers to press the buttons, which can eliminate the trouble that use thumbs only to make all operations. Specifications: Color:S4 transparent, S4 black, silveroptional Type: Left and right, A set of left and rightoptional Material: PVC + Zinc alloy Package Included: 1 * Game controller