Shoulder Megaphone Detachable Hand-held Microphone with volume control and On/Off switch Power Output: 15W Rated / 23W Max. 6 C batteries (9 hrs) Range: 400m Anti-bacterial treatment for all models (mouthpiece/microphone and handle) High durability ABS or ASA resin construction Compact and lightweight Wide frequency range for enhanced audio quality Neodymium magnets and Polyimide speaker diaphragms Five year warranty