Transmitting and receiving: Bluetooth 5.2 audio receiver and transmitter in one adapter, TX+ mode supported, one-button switching between devices to meet various needs. High-fidelity audio output interface: 3.5mm audio jack and Type-C port for compatibility with different audio devices. Supports hands-free calling. Universal Type-C port allows for data transfer and charging. High-capacity battery provides 10-12 hours of continuous playback. Built-in antenna design ensures high sensitivity and strong signal penetration for up to 20 meters transmission range. Size: 49 x 49 x 14mm Material: ABS Color: Black Package Contents: 1 x Bluetooth Transceiver 1 x USB Charging Cable 1 x 3.5mm Audio Cable Note: The package includes only the items listed above. Other accessories are not included. Note: Lighting and display differences may cause slight color variations. Measurement error allowed is +/- 1-3cm.