ASiNG WM03 2.4G Wireless Microphone Headset Microphone Bluetooth Speaker Kit (Black)

1. Frequency range: 2400MHz-2483MHz
2. Working distance: 15m
3. Battery type: rechargeable lithium battery
4. Battery capacity: 300MAh
5. Battery voltage: 3.5V-4.2V
6. Signal-to-noise ratio: 90db
7. Use time: sustainable use 5-6h
8. Charging time: 1-2h
9. Small and light, comfortable to wear on the head, and the ear hooks are stable.
10. 360-degree wireless transmission, high sensitivity.