Audio-technica ATW-2120b

ATW-R2100b receiver and ATW-T220a handheld cardioid dynamic microphone/transmitter.

Overall System
Operating Frequencies	UHF Band D: 656.125 to 678.500 MHz *DISCONTINUED IN NORTH AMERICA*Band I : 487.125 to 506.500 MHz
Modulation Mode	FM
Maximum Deviation	±40 kHz
Frequency Response	100 Hz to 15 kHz (+1 dB, -3 dB)
Operating Range	100 m (300′), typical Open range environment with no interfering signals.

Brand	Audio-technica