YOU FIRST Bluetooth Earphone

Style: Neckband
Communication: Wireless+Wired
Connectors: USB
Wireless Type: Bluetooth
Vocalism Principle: Dynamic
Control Button: Yes
Volume Control: Yes
Active Noise-Cancellation: Yes
Function: For Mobile Phone,Sport,Common Headphone
Plug Type: Line Type
Sensitivity: 120±3dB
Frequency Response Range: 20-20000Hz
Line Length: 0.7m
Resistance: 32Ω
Waterproof: No
Model Number: M
Support Memory Card: No
Support APP: Yes
Is wireless: Yes
With Microphone: Yes
Brand Name: YOU FIRST
Style 1: Bluetooth Earphone
Sytle 2: Bluetooth Receiver with Mic
Sytle 3: 70cm Wired Earphone without Mic
Battery Capacity: 90mA
Charging Time: About 1.5 Hours
Working Time: About 4-5 Hours
Wired Earphone Line length: 70cm
Active Call: Hands Free Mode With Microphone
Feature 1: Universal Adapter 3.5mm Aux With Collar Clip
Feature 2: Neckband 70cm Wired Earphone