Studio Monitors & Speakers
LD Systems U506 IEM R
LD Systems U506 IEM R, Bodypack Receiver, For LD Systems U506 IEM, Frequency range: 655-679 MHz, 12 Channels, On/Off switch, Channel down, Channel up, Volume control, Headphone output, Powered by 2 x 1.5 V AA
https://www.bizrate.co.uk/musicalinstrumentmonitors_speakers/ld-systems-u506-iem-r-oid12040509693.html