An 800MHz band wireless transmitter series for professionals committed to thoroughness, for example, for sound creation in broadcasting stations and theater halls. Design that has created an industry standard offering safety and security in sound creation. Designed by a team with thorough knowledge about onsite requirements. The shape of the main body reduces unwanted contact while wearing the product and prevents the connector from disconnecting. The technology is designed to prevent any false operation which could lead to an accident. The battery case can be inserted from both the front and back side, and is one-touch detachable.