the t.bone TWS 16 PT 600 MHz, 16 channel UHF wireless-system - 9,5" diversity receiver, bodypack (line/mic switchable) with 3-pole mini XLR connector (AKG compatible), 16 switchable frequencies (606 - 630 MHz), up to 4 parallel systems, switchable squelch, XLR and jack output, external power supply (DC 12V/500mA), accessories included: 19" rack mounts (for rack mounting two TW16 units), 1m jack output cable, 1m guitar cable. Transmitter takes two 1.5 V AA batteries. frequencyrange especially for UK. Please note: Due to every country having different regulations, you may need to contact your local licensing authorities before using a wireless system.