Aerials; Aeronautical radio communication machines and apparatus; Air traffic control radio equipment; Amplifiers; Batteries, electric; Battery chargers; Cell phone straps; Chargers for electric batteries; Devices for wireless radio transmission; Earphones; Electric navigational instruments; Global positioning system (GPS) apparatus; Intercoms; Marine radio communication machines and apparatus; Masts for wireless aerials; Megaphones; Microphones; Portable emergency intercoms; Public address s...