AKG WMS 470 Vocal Set C5 handheld wireless mic system has an automatic frequency setup function that immediately finds and displays all available channels. AKG WMS470 Vocal Set 5 consists of a HT 470 handheld transmitter with C 5 condenser microphone element and a SR 470 receiver. WMS 470 wireless system operates up to 16 channels simultaneously within the same frequency band and up to 48 channels by using multiple frequency bands. AKG Vocal Set C5 handheld transmitter is powered using a single rechargeable battery, providing up to 14 hours. HT 470 is a rugged tool built to take even very rough handling. AKG SR470 receiver displays backlighting changes in color to warn the user of such critical operating conditions as transmitter battery running low, audio peaks, or low RF signal strength. AKG WMS 470 Vocal Set wireless mic system has the crisp and professional sound of the C 5 dynamic microphone within its capsule.