mini headset used for audio device
Speaker Size: #7mm
Sensitivity: 108dB13dB at 1KHZ
Frequency Response: 20-20,000HZ
Max Input Power: 60mW
Cord Length: 1.2m (changeable)
Jack Type: #3.5mm stereo plug
It is compatible with:
MP3/MP4, CD, radio, and other audio device.
In-ear stype earphone, with big, middle , small size(any color you want) rubber ring. All can be customized per your need.