The MPH40 is a powerful, pistol-grip megaphone great for outdoor announcements. It comes fitted out with a switchable siren, collapsible handle, and a trigger control. For convenience, the microphone detaches from the back of the megaphone to give you even more freedom. To allow you to connect smartphones and other storage devices, the MPH40 also comes with a standard 1/8 AUX input. For extended battery life, the MPH40 can run off the rechargeable MPHBATTERY (sold separately) or 8 C batteries (not included). From full charge, the MPH40 gives you approximately 5 hours of use so you can keep the party going even longer. The MPH40 also sports an impressive range with a peak power output of 75 watts. The Technical Pro MPHBattery is universal and compatible with most large megaphones including Pyle, Seismic, and Ampli-vox. The Technical Pro MPHBattery is simple and user friendly, with a built-in AC wall charger which opens and closes for convenience, and an LED indicator to let you know its fully charged. Any time you purchase a Technical Pro product you are protected by the technical pro guarantee. if at any time you are not satisfied, just reach out to us, and a member of our team would be happy to help you! Features: Great for making announcements at parties and medium-size venues Higher powered model so you can reach more people with your announcements Detachable, handheld mic gives you additional freedom Extended battery capabilities give you more playtime Peak Power: 75 Watts Input: Aux 3.5mm Up to 5 Hours of continuous use Battery: 8C batteries (not included) or rechargeable battery (Model: MPHBATTERY purchase separately) Antifeedback Microphone ABS construction and ergonomic pistol grip Handheld or shoulder strap (included) Police Siren Volume Control Microphone can be used with trigger button or set continuously on with Microphone switch Dimensions (L x W x H):14"x9.2"x5.5" Features: Designed to Work Technical Pro ER66 Megaphone Models Built in AC Wall charger LED charge status indicator Automatic charge protection Charge lasts for approximately 5-8 hours. Built-in rechargeable battery fully charges in approximately 4-6 hours For maximum battery life the battery should be fully charged prior to its initial use Dimensions (L x W x H):14"x 9.2" x 5.5"