AKG PW45 Vocal Set B2 - Perception UHF wireless system with handheld transmitter, 5 switchable frequencies in B2 range (774,100 - 777,900MHz), 9.5" diversity receiver with internal antennas, adjustable output volume, XLR out, dynamic handheld transmitter with cardioid capsule, requires 1x AA or rechargeable battery, low battery display, on/off/mute switch on transmitter. Includes power supply, SA45 stand adapter and 1x AA battery. Please note: Due to every country having different regulations, you may need to contact your local licensing authorities before using a wireless system.