language Learning system headset.

1. Good looking and wearing comfort2. Excellent sound effect, clear sound quality

3. Stable and durable

4.line volume control operation

Specification

Headphone :

Louder speaker : Φ50

Sensitivity:  112±2dB  S.P.Lat1KHz

Frequency Response :20Hz-20000Hz

Impedance: 32Ω±10%\400Ω\16Ω

Rated power: 20mW

Maximum output: 200 mW

Cable lenghth: 1.8m±0.3

Micin: 9.7*6.7mm -56 dB±2dB

Pin: stereoΦ3.5mm*2

HL-898 Stereo language laboratory headset