Technical Pro 20W Portable Megaphone Bullhorn with Siren and Volume Control 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): 5.5 x5.3 x9