Different megaphones it has different places to use

 Megaphone can be divided into many types according to their size, usage and use, each with its own advantages. Portable megaphones are limited by shape and horn, and the general power is only 3-8W. Wireless amplifier and wired amplifier is different size, different uses, smaller size suitable for teachers, tour guides to use, hanging around the waist, so that the hands play more free, its power is generally also 3W-8W. Large for outdoor activities, summer camps, after-school lectures and other high traffic places, power in 35W---95W. Lithium-ion Megaphone are one of the categories classified according to the type of battery they use. It solves the problem of pollution to the environment of traditional dry batteries, which mainly uses lithium-electric cell phone technology to power the loudspeakers.

 Megaphone contains sound, whistle, built-in recording and other functions, for schools, factories, police and other purposes, light weight, power, beautiful appearance, easy to use.