Sennheiser SKM 945 G2

RF frequency range: 518–866 MHz
Transmission frequencies: 1,440
Presets: max. 20
Switching bandwidth: 36 MHz
Peak deviation: ± 48 kHz
Compander: HDX
AF frequency response: 40–18,000 Hz
Signal-to-noise ratio:. > 115 dB(A)
THD:. < 0.9 %
In compliance with:. ETS 300422, ETS 300445, CE , FCC
Power supply  2 x 1.5 V (AA)
RF output power: 30 mW
Operating time  > 8 hrs
Dimensions: d = 50 mm (1.97?),
Weight: 450 g (15.87 oz)
Transducer  dynamic
Sensitivity: 1,6 mV/Pa Max.
SPL: 154 dB
Pick-up pattern: super-cardioid