The AKG WMS40 Mini handheld wireless vocal microphone system is the perfect way to amplify your voice on stage. This wireless system gives you complete freedom to move around without worrying about the restrictions of cables, operating on the 660.7 MHz frequency (A-Band). Delivering crystal clear sound and is a true plug'n'play microphone solution. It is the perfect wireless solution for small stages, clubs, places of worship, hotels, and gyms. The system is comprised of 2 main components; the handheld transmitter (HT40 mini) and the receiver (SR40 mini). The WMS40 Mini system is a stand out for its extremely long battery life of 30 hours with a single alkaline AA battery which helps saving money in the long run. *Please Note: You cannot use more than 1x A-Band wireless microphone in the same area at the same time.