Easy Connect Bluetooth 

Plug Type: Wireless
Frequency Response Range: 20-20000Hz
Active Noise-Cancellation: No
Communication: Wireless
Volume Control: Yes
Support Memory Card: No
Waterproof: No
Resistance: 16Ω
Style: Neckband
Vocalism Principle: Dynamic
Is wireless: Yes
Connectors: USB
Control Button: Yes
With Microphone: Yes
Sensitivity: 110±3dB
Function: Supports music,Bluetooth
Wireless Type: Bluetooth
Support APP: Yes