Sennheiser XSW 2-ME3 A: 548-572 MHz

Features
Lightweight headmic for hands-free operation and compact bodypack transmitter
True diversity receiver with metal housing
External antennas
Automatic frequency management and synchronization via remote channel for easy setup
Fully tunable over a wide range of UHF frequencies
Rackmount kit included
Up to 12 compatible channels

Specs
Receivers
Dimensions approx. 200 x 42 x 127 mm
Weight approx. 680g
Power supply 12 V DC nom. / 300 mA

Transmitter
Dimensions approx. 71 x 96 x 28 mm
Weight approx. 95g
Operating time approx. 10 hrs

Microphone condenser
Frequency response 50 to 16,000 Hz (-3 dB)
THD, total harmonic distortion ≤ 0.9%