Features: [BT 4.2]: This speaker supports BT device with A2DP function, it can be connected with BT devices within 10 meters. [Multi-functional Speaker]: Multi-functional speaker allows to switch modes between BT mode, TF card mode. Multiple modes for music enjoyment. [High Fidelity Sound Quality]: Enjoy crisp and clear audio with impressive 360Surround Sound powered by 3W acoustic drivers. [TF Card Reader]: Supports insert TF card playing, up to 32G extended memory supported, intelligent voice prompt operation of the function status. [Touch LED Light]:3 levels of warm light brightness and colorful light changing, with touch sensor control design on top.