1. Working voltage: 5V

2. Working current: 50mA

3. Frequency range: 2.400-2.483GHz

4. Frequency response: 20～20KHz

5. Channel spacing: 2MHz

6. Transmitting power: 7 dBm

7. Sending and receiving distance: ≥10M, 360°

8. Receiving sensitivity: -80dBm

9. Plug type: USB/RCA/Ф3.5mm

10. RCA-3.5 cable length: 2m

11. USB-USB mini cable length: 1.2m

Headphone part:

1. Working voltage: 3.6V

2. Working current: 50 mA

3. Lithium battery capacity: 450 mAh

4. Continuous working time: 8h

5. Charging time: ≈3h

6. Frequency range: 2.400-2.483GHz

7. Channel spacing: 2MHz

8. Transmitting power: 3dBm

9. Sampling frequency: 32KHz, 16bit

10. Modulation method: GFSK

11. Receiving sensitivity: -80dBm

12. Signal to noise ratio: ≥50dB

13. Horn diameter: Ф40mm

14. Speaker impedance: 32Ω

15. Frequency response: 20～20KHz

16. Microphone specifications: 6*5mm

17. Microphone sensitivity: -58dB

18. Microphone directivity: omnidirectional

19. Microphone frequency response: 100Hz-8KHz

20. Earphone connection plug: Ф3.5/2.5mm

21. Length of earphone handle cable: 1m