IR earphone 1) Light weight headset for comfortable wearing 2) Automatic muting desigh on receiving headphone

IR earphone1) Light weight headset for comfortable wearing2) Automatic muting desigh on receiving headphone

3) FM system carrier frequency : 2.8 MHz right channel, 2.3 MHz left channel

4) Speaker : 40 mm

5) Power source: batterries UM4 x 2 (optinal)

6) Effective range (max): about 10m

7) Cone impedance: 32+/-15%

8) Battery life: about 48 hours

IR earphone