Main Features: ? This product is mainly suitable for the Android / iOS / Nintendo Switch / Win 7 / 8 / 10 system Bluetooth connection, the game operation? Android supports multimedia functions: volume +, volume, up, down, play / pause? High precision rocker, smooth operation? The product has the function of super long expansion, can adjust the scale, the maximum support is 280mm length, very suitable for use on the tablet computer? The structure is ergonomic and smooth, and it can effectively relieve sore fingers