3 Year Klein Electronics Manufacturer Warranty. Remote Shoulder Speaker Microphone. Also Compatible with PR400, RDU2020, RDU2080D, RDU4100, RDU4100, RDU4160D, RDU4160D, RDV2020, RDV2080D, RDV5100, SP10, SP21, SP50, VL50, XTN446, XTN500, XTN600, XU1100, XU2100, XU2600, XV1100, XV2100, XV2600 and Bearcom BC10, BC20, BC90, BC95, BC120, BC130, BC300D and HYT Hytera TC508 TC518 Two Way Radios.
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