Ear Clip Type Sound Conduction Concept Bluetooth Earphone With Digital Display Charging Compartment(White) Type-Headset Working temperature: -10 Degrees Celsius

Working temperature: -10 Degrees Celsius -55 Degrees Celsius

surveillance camera to monitor and image processing devices w/ BNC port

effectively blocking environmental noise

6 speakers high and low frequency crossover design

Microphone Stand x 1

Ear Clip Type Sound Conduction Concept Bluetooth Earphone With Digital Display Charging Compartment(White) Type-Headset Working temperature: -10 Degrees Celsius1. Bluetooth version: V5. 3 2. Call distance: about 10 meters 3. Battery capacity: earphone 50mAh, charging 300mAh 4. Charging port: Type C USB C 5. Charging voltage: 5V 6. Talking time: about 10H 7. Play music: about 8H 8. Material: ABS 9. Speaker diameter: 12MM 10. Speaker impedance: 32 ohms 11. Speaker diaphragm: PET 12. Call sensitivity: 42dB 13. Earphone distortion: 1K 5% 14. Magnet type: chintie boron N40 15. Charging compartment size: about 6.