Function: Connect, support mobile device touch connection, no manual connection required. Support AUX, 2-(L & R): With AUX, suitable for various audio devices. Bluetooth 5.0: Stable connection, Bluetooth V5.0 chip ensures lossless audio signal transmission for speakers, car audio, or stereo systems. Compatibility: Suitable for HD players, TVs, CDs, game consoles, mobile phones, earphones, speakers, and more. HiFi Sound Effect: No delay, heavy bass, Bluetooth decoding chip transmission, stable 15M transmission range. Specification: Model: - Material: ABS Plastic Color: Black Bluetooth version: Bluetooth 5.0 Interface: - Connection range: 15m Battery capacity: 200mAh Working time: Receiving 8 hours / Transmitting 5 hours Frequency response range: 10Hz - 20kHz Signal-to-noise ratio: 110dB Size Chart: 60x60x18mm / 2.36x2.36x0.71inch Package Includes: 1 Piece Bluetooth Adapter 1 Piece Data Cable Note: 1. Please allow slight error due to manual measurement. 2. Due to differences between monitors, the picture may not reflect the actual item.