This Shure PG4 wireless receiver operates on the UHF band with a frequency range of 854MHz to 865MHz, making it ideal for live performances. It comes with a Shure AC adapter PS21UK and has a form factor of a microphone receiver. The PG4 model has features like a PSU 12 volt supplied and is suitable for musical instruments and DJ equipment. The brand of the receiver is Shure, a reputable name in the pro audio industry. This item belongs to the categories of microphones, pro audio equipment, and musical instruments & DJ equipment.