The gray Toa Electronics ER-520W is a handheld megaphone designed to provide reliable voice and whistle amplification for indoor and outdoor public address scenarios. 6W of rated output power provide a maximum range of approximately 820 feet for voice projection, or up to 1033 feet for the whistle alert. This megaphone incorporates an anti-bacterial treatment to ensure safe usage when passed from person to person.

The compact and lightweight ER-520W features a durable ABS resin housing and a pistol-grip handle with a trigger-style talk switch and a convenient carrying strap. It can be powered by eight AA batteries (available separately) for up to ten hours.