Authorized Motorola Dealer. Newest model Motorola Walkie-Talkies, quality Motorola Accessories, Headsets, Surveillance-Kits, Base Stations and Repeaters. SJM design experts specialize in complex communication systems. Best Equipment, Best Service. SJM provides walkie-talkie radios for the largest special events and productions in Southern California. Let SJM provide walkie-talkie radios for you too!