1、Dual signals can be switched at will, receiving and transmitting signals are integrated, suitable for multiple devices. 2、Let the computer have BT function, put aside the traditional wired constraints, and wireless listening to music is more free. 3、Using BT 0 chip, low power consumption and high speed, stable signal transmission, listening to songs more smoothly. 4、Built‑in antenna, 10 meters barrier free transmission, free playback even on partition wall, barrier free connection in the living room. 5、Made of ABS material, durable and long service life, suitable for type C power supply interface. 1 x Adapter 1 x Audio Cable1 x Data Cable1 x Manual Item Type: Audio AdapterMaterial: ABSModel: C29BT Version: V 5.0Power Supply Interface: Type COutput Interface: 3.5mm AudioTransmission Distance: ≤10m/ 32.8ftInput Voltage/Current: DC 5V/1ABattery Type: Lithium BatteryBattery Capacity: 200mAh (Shipped with Built-In Battery)