Function: IPX7 waterproof FM radio Volume adjustment Bluetooth 5.3 Answer call button RGB color light 360° surround sound Suction cup, hanging hole Built-in microphone Question:What should I do if my phone cannot search for Bluetooth after turning on the speaker? (Bluetooth name: T7) Answer: Make sure no other devices are connected to this Bluetooth. If other devices are connected, T7 cannot be searched. In this case, you only need to disconnect the Bluetooth connection of other devices