HP-IR2 Headphones wireless

Wireless IR stereo headphones for multimedia monitors (if IR compatible), 2 channels allow the simultaneous connection of two headphones each to another monitor, black-gray design.

Features / Parameters:

Foldable, adjustable size
Adjustable size;     automatic turn off function
    volume adjustment
    range: up to 10m
    A channel left 2.3Mhz, right 2.8Mhz
    B channel left 3.2Mhz, right 3.8Mhz
Power supply: 2x AAA batteries (not included)
    response: 20-15000HZ
    impedance: 32ohm
    speaker: 40mm Mylar
    S/N:  > 60dB
    2x AAA batteries included