Communication:Wireless
Connectors:None
Wireless Type:Bluetooth
Vocalism Principle:Dynamic
Brand Name:SIFREE
Style:Neckband
Control Button:Yes
Volume Control:No
Active Noise-Cancellation:Yes
Function:Common Headphone
Plug Type:Wireless
Sensitivity:103±3dB
Frequency Response Range:20-20000Hz
Line Length:0.6m
Resistance:32Ω
Waterproof:No
Model Number:Stereo Noise Reduction Bluetooth Earphone
Support Apt-x:No
Support Memory Card:No
Support APP:No
Is wireless:Yes
With Microphone:Yes
Color:Black, gold
Bluetooth chip and Bluetooth version:CSR 4.1
Battery:3.7V 60mAh
Charging power:5V / 80mAh
Talk time:about 4 hours
Time:about 5 hours
