Azden IRR-10 receiver specification:
Sub-carrier frequencies : 2.56MHz
Type : Super heterodyne - crystal controlled
Modulation : FM
Signal to Noise Ratio : >90dB
Image rejection : >40dB
Reception sensitivity : >25dBµV
Reception selectivity : +/-40kHz
Audio output adjustment : Line: +4dB maximum
Audio output impedance : Line: <1k ohms
Power requirement : 12V AC 1.6A (240V Power Adapter Included)
Power Consumption : DC 12V 350mA
Size : 141 x 129.5 x 24 mm (WxDxH)
Weight : 311g approx.

Azden IRH-10 microphone specification:
Sub-carrier frequencies : 2.06 MHz & 2.56 MHz switchable
Modulation : FM
Audio distortion: <1.0% (+/-15kHz deviation @1kHz)
Microphone element type : Uni-directional dynamic
Battery type : 2-"AA" alkaline (2 x 1.5V)
Battery life : (260mA drain) >10 hours w/alkaline batteries
Size : 255 x 58mm
Weight : 258 g with alkaline batteries

1 x Azden IRR-10 1-Channel Infrared Wireless Receiver
1 x Azden IRH-10 Infrared 2-Channel Handheld Microphone