raven315 - I have been using Radio Shack lapel speakers to listen to my Hand Held Scanners over the years, just about any Lapel Speaker with a 3.5mm mono jack should work. there are a lot of Possibilities from ICOM, YEASU, KENWOOD and others but they are Expensive compared to Radio Shack (Defunct). the Audio Quality of the RS Lapel Speaker were quite good, despite the reasonable price.