1. Bluetooth version: V5.1
2. Support protocol: RX: A2DP AVRC TX: A2DP
3. Working frequency band: 2.402GHz -2.480GHz
4. Interface type: input: 3.5mm interface / output: 3.5mm interface
6. Built-in battery: 150mAh
7. Charging time: about 2 hours
8. Life time: RX is about 8H, TX is about 5H
9. Bluetooth distance: 10~15M (open place)
10. Charging method: Type-c DV5V
11. Applicable scenarios: all kinds of speakers/car/computer/TV/amplifier, etc.
12. Size: 66x20x12mm