Bone Conduction Waterproof Wireless Ear Hook with Bluetooth 5.0 Color:gray Feature 3: Power supply: from

Feature 3: Power supply: from USB no external power supply

Wireless Range:  Up  to 60 meters / 197ft (Open area)

Temp Measurement Accuracy: ±1°C

Feature 6 Has 399 call extensions

Bone Conduction Waterproof Wireless Ear Hook with Bluetooth 5.0 Color:gray Feature 3: Power supply: fromStyle: Neckband Certification: CE Sound: Dynamic Control Button: Yes Active Noise Cancellation: Yes Communication: Wireless Volume Control: Yes Wireless Type: Bluetooth Support APP: Yes Function: Sport Connectors: None Waterproof: Yes With Microphone: Yes Function: Call function support music Package Included: 1*Earphone 1* Charging cable 1 * Manual