These 2 Pin Motorola M1 connector high-quality Speaker Mics are compatible with Motorola, Hytera, and Baofeng radios that require a 2 Pin M1 earpiece connection. The Speaker Mics feature a single pin connector (3.5mm), allowing you to attach a listen-only earpiece if needed. This versatile communication accessory provides clear audio quality and ease of use. If you have any further questions or need additional assistance, feel free to ask.