Studio Monitors & Speakers
LD Systems MEI 100 G2 BPR
LD Systems MEI 100 G2 BPR, UHF Wireless InEar receiver, 96 Switchable frequencies (8 groups & 12 channels), Frequency range 823 - 832 and 863 - 865 MHz, Integrated limiter up to +12 dB, Headphones out, Operation with 2 x AA battery
https://www.bizrate.co.uk/musicalinstrumentmonitors_speakers/ld-systems-mei-100-g2-oid5343822513.html