When buying and using megaphone, pay attention to a few points

 Megaphone are widely used in guided tours, military police riot control, flood rescue, filming and other on-site command, in the purchase and use should pay attention to the following points:

 1、Look at the information on the outer packaging. Packaging and printing should be clean and clear, should be marked with information about the production enterprise, product information, such as power, frequency response range, production date and other information. Generally speaking, the greater the power, the stronger the loudspeaker's ability to amplify;

 2、Look at the physical. The appearance of the product should be clean and tidy, clear signs, hand shake the shouter, the interior should be no abnormal sound. Check the type of battery, whether it's a built-in rechargeable lithium battery, with an external battery, or a different battery.

 3、Listen to the sound. Turn on the speaker power supply, the person's mouth close to the listener and keep the appropriate distance after the sound, the voice of the speaker should not have a sharp noise.

 4、Look at the features. The basic handheld shouter has only a megaphone function, but also a multi-functional handheld or belt-calling voicer that can fm, play U-disk songs, and some are small, portable multi-function megaphones.

 5、Compare prices. The price of the shouter is related to power, frequency range, component material, brand, and type of battery used. According to their own needs, choose the right products, as far as possible to choose well-known enterprises or brand products.