Product information and features: This 30-Watt Megaphone comes with an attached remote microphone so you can deliver your message loud and clear without straining your arms. Carry the megaphone on your shoulder with the strap and talk into the microphone instead of holding the megaphone to your mouth. The PAM001 30 W Megaphone is an incredibly loud megaphone that stands out due to how easy it is to carry around with its shoulder strap and detachable palm mic. If you need to use your megaphone all day long and you need it to be LOUD then this megaphone is the one for you! Output Power: 30 W Horn Diameter: 230 mm Range: 500 Meters and more Voice / Siren Switch Lockable talk button & volume control at the microphone Carry Shoulder Strap Power Requirement: 8 x “C” Size 1.5 V Batteries Can also operate from car battery via the cable provided