Product Specifications:
• Music Muting during Verbal Communication
• Volume Control & Adjustment of Sound Balance for Left and Right Ears
• Dock Charging

Carrier Freq. : 2.4GHz
Modulation : GFSK
Operation Power (Tx) : Adaptor DC 5V 550mA
Operation Power (Rx) : Li 3.7V 380mA (built-in)
Speaker Driver : 15mm
Freq. Response : 50~20KHz 
Distortion : < 1%
S/N Ratio : > 70dB
Operation Distance : 25M
Set Dimension : 135(W) x 120 (D) x 255 (H) mm
Set Weight : 180 g
Optional : Optical In