1. Bluetooth intercom communication earmuffs have built-in wireless intercom module and Bluetooth module, up to 1500 meters communication distance, can be

connected to walkie-talkie for communication, clear and unobstructed calls. This product is approved for use in explosive environments (Ex). Suitable for petroleum and petrochemical, mining and quarrying, industrial and mining maintenance, ship factories and other noise environments.

2. Noise Reduction Rating： Headband SNR: 32dB Cap SNR: 30dB

3. Battery Powered： 3.7V 1440mAh

4. Charging Time： <4h

5. Charging Port: Type-C

6. Frequency Rn ge: 400MHZ~470MHZ

7. Channel Count: 16

8. Fring Power:≥500mW

9. Receiver Sensitivity: ≤-124dBm

10. Communication Distance： ≥1500m(open land)

11. Battery Life: ≥8h

12. Operating Temperature： -30°C~+60°C

13. Application Scenario： Industrial and mining maintenance, drilling platforms

14. Hearing Protection Certification：European Union (EU)2016/425 Module B, Module C2， EN352-1,EN352-3,EN352-4,EM352-6,EN352-8