OMS-M5 Digital Bluetooth 5.0 Audio Receiver And Transmitter 2-In-1 AUX Adapter Converter 1. Using bluetooth 5.0 chip design, compatibility and stability is stronger 2. Bluetooth receiving, bluetooth transmitting two-in-one 3. Equipped with high-definition LED digital display screen, the working status and bluetooth mode is clearly visible 4. Built-in digital to analog chip, support AUX, RCA, USB, TF interface 5. Cool breathing light, redblue dual-color, soft and not blinding 6. Built-in 400mAh rechargeable lithium battery, long battery life 7. Support USB (U disk), TF card playback and transmission 8. Built-in high-definition microphone, support wireless listening, hands-free communication, navigation 9. Simple connection, without any driver and download APP Parameters: 1. Bluetooth version: bluetooth V5.0 2. Support protocol: RX: A2DP AVRC; TX: A2DP 3. Working frequency band: 2.402GHz -2.480GHz 4. Power level: 2 5. Sensitivity: -85dBm less than 0.1 percent BER 6. Signal-to-noise ratio: greater than or equal to 90dB 7. Distortion: less than or equal to 0.1 percent 8. Interface type: input: 3.5mm AUX + RCA + USB + TF; output: 3.5mm AUX + RCA 9. Supported formats: MP3WAVWMAAPEFLACG729M4AALACAMRDTSMIDIG726MTY 10. Screen size: 33 x 14 x 4mm 11. Operating current: less than 40mA 12. Built-in battery: 3.7V400mAh (3.7W) 13. Charging current: about 500mA 14. Operating time: RX about 6-8H, TX about 8H 15. Bluetooth distance: 10m (without obstacles) 16. Charging method: Type-C 5V0.5A 17. Size: 73 x 67 x 30mm 18. Weight: 68g Packing list: host + Type-C charging cable + 3.5mm audio cable + red and white RCA lotus cable + instructions