Listen Only EarpiecesFrom 3.5 mm or 2.5 mm with lengths of 7 inches, up to 42 when privacy is needed Shoulder MicrophonesDepending on your environment, we can match you with either heavy, medium and light weight duty. Earpieces - 1 or 2 wireNeed to talk more discretely? Use a 2-wire (or 1 wire) earpiece so all communications stay quiet, and between radios only Batteries We offer a large selection of batteries for all popular brands of radios. ChargersWe offer single, six or 12 unit chargers for all popular brands of radios.