Speaker Diameter:φ15mm
Impedance: 32Ω±15%
Sensitivlty:106±3dB
Frequency Response:20-20kHz
R.M.S:25mW
Microphone: 6 * 5mm
Cord Length: Appr 1.15m
Plug Type: 2.5mm / 3.5mm

Mobile phone handsfree kit, with good quality & competitive price, portable to use.