SX12 Wireless Microphone

1. Input voltage: 5V
2. Microphone battery: 200mAh
3. Receiver battery: 200mAh
4. Charging compartment battery: 1000mAh
5. Battery life: 9 hours
6. Signal-to-noise ratio: 64dBM
7. Transmission delay: 30ms
8. Sensitivity: -42 dB
9. Frequency response range: 20-20KHZ
10. Transmission distance: 20-30m (barrier-free)