B8 Car AUX Coaxial Bluetooth Audio Adapter

Features1. Built-in high-definition call MIC, one key to answer calls! 2. High-end Bluetooth 5.1 chip design, fuller and richer sound quality 3. One-key switch between RX and TX modes 4. RCA, I2S audio input/output interface, can be switched freely 5. Built-in 250MA battery, long battery life, 8-12 hours of use 6. Automatic reconnection can be realized in both receiving mode and transmitting mode, and has a memory function for connected products.Specification1. Bluetooth version: V5.1 2. Supported protocols: RX: A2DP, AVRCP, HFP TX: A2DP 3. Working frequency band: 2.402GHz-2.480GHz 4. Power Class: Class 2 (Class II) 5. Audio codec: SBC 6. Working current: RX7H 7. Built-in battery: 250MAH 8. Charging current: about 200MA 9. Charging time: about 2 hours 10. Battery life: RX more than 12H, TX more than7 hours 11. Bluetooth distance: more than10M (open space) 12. Charging method: USB Type-c 5V/0.5A 13. Input/output connection: AUX, RCA audio interface 14. Compatible: Android, IOS system mobile phones and PAD, Bluetooth speakers or headphones that support A2DP protocol are connected for use