Arama A201M13 Covert Acoustic Tube earpiece headset with PTT and Microphone for Motorola SL7550, 7580, 7590 and SL300, SL4000, SL1K, SL1M With transparent acoustic tube, this two way radio headset earpiece with mic makes you low profile and protects your health from radio electromagnetic wave radiation. A 1 pin earpiece headset with PTT, providing you clear sound performance without distortion for both listen and talk. Amazing walkie talkie headset with directional and extremely durable PTT microphone. This walkie talkies earpiece with PTT is ideal for police, military, nightclubs, bars, paintball, security,restaurants, hotels, bouncer, warehouses, and noisy environments. Compatible with Motorola SL7550, 7580, 7590 and SL300 SL4000 SL1K SL1M. Can't find your radio in list? See Compatibility Guide (Last Picture) and Make Selection.