AKG WMS 40 Mini Earmic ISM1

AKG WMS 40 Mini Earmic ISM1, UHF Wireless System, With bodypack and COBT earset microphone, Non-diversity receiver with balanced jack output, Adjustable, HDAP Technology (High Definition Audio Performance), Up to 30 hours of use with 1 AA battery, On / off / mute switches, LED function display, and low-battery display on the transmitter, Three status LEDs on the receiver, Incl. condenser COBT earset microphone, Frequency: ISM 1 (863.100 MHz), No license is required and no charges are incurred when used anywhere in Europe