Feature：
1. The back-hang design looks simple and portable, and the whole white feels natural;
2. They are made of light and high-rigid material, comfortable to wear;
3. The gooseneck microphone enables you to adjust to the best calling position;
4. The device of control by wire enables easy volume control.
Speaker Dimension: Ф40mm
Impedance: 32Ω
Sensitivity: 105dB S.P.L.at 1KHz
Frequency Response:20Hz-20,000Hz
Rated Power:15mW  
Power Capability:150mW 
Cable Length: 2.4±0.15M
Plug Type: Ф3.5 Stereo
MICROPHONE SECTION
Microphone Unit: Ф6*5mm
Microphonet Directivity: Omnidirectional
Sensitivity: -58±3dB
Impedance: 2.2kohm
Frequency Response: 30Hz-16,000Hz
Standard Operating voltage: 3V