The MPH15 is a durable pistol grip megaphone with a collapsible handle. It features a built in microphone with integrated controls. In addition, it comes with a preset police siren. The MPH15 runs off 4 C batteries (not included). Features: Great for making announcements at small gatherings and parties Light-weight, foldable compact design for maximum portability Noise effect features for additional fun Extended battery capabilities give you enhanced playtime Peak Power: 20 Watts Built in Microphone Input: Aux 3.5mm Up to 5 hours of continuous use Battery: 4 C batteries (not included) Antifeedback Microphone Technology ABS construction and ergonomic folding pistol grip Handheld or shoulder strap (included) Police Siren Volume Control Dimensions (L x W x H): 8.8"x5.5"x5.5"