Compact handheld megaphone is small in size and light in weight and it can be easily carried by single hand. It can also provide a whistle tone. Handle and microphone with anti-bacteria treatment improve hygiene and safety during use. Newly developed polyimide diaphragm is employed to ensure high sound quality. It is made of high durability ABS or ASA resin construction. It is compact and lightweight. It provides wide frequency range for enhanced audio quality and neodymium magnets and polyimide speaker diaphragms.