ER2215 15W Shoulder Megaphone with Detachable Mic 400mThe ER 2215 is an easy to operate, shoulder megaphone rated at 15 W of output and having a separate microphone. It can be mounted to the optional ST 16A speaker stand. The newly developed polyimide diaphragm is employed to ensure high sound quality. Product Features Detachable Hand held Microphone with volume control and On Off switch Power Output: 15W Rated 23W Max. 6 C batteries (9 hrs) Range: 400m (speech) 500m (whistle) Anti bacterial treatment