Style: In-Ear
Communication: Wireless
Connectors: USB
Wireless Type: Bluetooth
Vocalism Principle: Dynamic
Control Button: Yes
Volume Control: Yes
Active Noise-Cancellation: Yes
Function: For Mobile Phone,HiFi Headphone,Sport
Plug Type: USB
Sensitivity: 3dB
Frequency Response Range: 20-20000Hz
Line Length: None
Resistance: 32Ω
Waterproof: Yes
Is wireless: Yes
With Microphone: Yes
Brand Name: Coocheer
Item: Bluetooth Earphones
3 Colors: Black Gold, Black Silver, White Gold
Model: K21
Transmission Range: 10 Meters
Channel: Stereo
Bluetooth Protocol: 4.1, 5.0
Battery: 300mAh
Charging Time: 2.5 Hours