Resistance:40Ω
Function:Sport,Common Headphone
Brand Name:SIFREE
Model Number:Bluetooth earphone
Line Length:None
Is wireless:Yes
Waterproof:No
Communication:Wired
Support Apt-x:No
Support Memory Card:No
Wireless Type:None
Connectors:None
Style:In-Ear
Volume Control:Yes
Active Noise-Cancellation:No
Plug Type:Wireless
With Microphone:Yes
Sensitivity:123dB
Frequency Response Range:20-20000Hz
Vocalism Principle:Dynamic
Control Button:No
Support APP:No
Color:Red, Blue, Green, Black
Bluetooth version:V4.1
Frequency:2.4-2.48 GHz
Operation distance:up to 10M
Charging time:about 2 hours
Efficient working time:about 5-6 hours
Standby time:up to 180 hours
Material:Plastic+ Silicone
Wireless Range:Up to 33 feet/10 meters range
