Midland Radio Corporation is the oldest manufacturer of CB radios in the U.S., and was the first to introduce a 14 channel FRS radio to the market. Midland has always stayed on the forefront of two-way radio technology, offering the latest features at value prices. In addition to their full line of CB and FRS handheld and mobile radios Midland offers Weathermax weather monitor alert radios, marine and amateur radios, and a complete line of antennas and accessories.??Midland Radio offers this value-oriented earbud/microphone. It works perfectly with a variety of models. It features a custom earpiece with a separate push-to-talk button on microphone. It also has switchable PTT/VOX functions.