Compatible with Motorola Radio with 2-Pin M1 Connector: MOTOTRBO CP200D, CP100D BPR40D, R2 and Other Commercial Radio BPR40, DEP450, EP450, RDM2070D, RMU2080D Also compatible with Other Retail Radio XiR P3688, CLS1410, CLS1110, DLR1020, DLR1060, (Please be aware that it is not compatible with Kenwood, Baofeng, Cobra and Midland radios) Modular design – being able to interchange and work with every 5 pins cable with or w/o PTT. Behind the head metal band with overhead strap, ideal to use with safety hard hats. Heavy duty headset with noise isolation boom microphone with 24dB noise reduction rating. Compatible with Motorola: CP Series: CP100, CP100D, CP110, CP125, CP150, CP185, CP200, CP200D, CP200XLS, XP1300. XT400 Series: XT420, XT460. XT600d Series: XT660d, XT665d. CLS Series: CLS1110, CLS1410, CLS1413, CLS1450, CLS1450C, CLS1453C, CLS1810T. DLR Series: DLR1020, DLR1060 Compatible with Motorola: DTR Series: DTR410, DTR550, DTR600, DTR650, DTR700, DTR2430, DTR2450 RDX Series: RDU4100, RDU4160D, RDV5100, RDU2020, RDU2080D, RDV2020, RDV2080D, RDM2070D, RDU4103, RDU4163D. RM Series: RMU2040, RMU2043, RMM2050, RMU2080, RMU2080, RMV2080. P100 Series: P100: P140, P145, P160, P165, P180, P185. Compatible with Yaesu: FT-4VR, FT-4XR, FT-25, FT-25R, FT-65, FT-65R. Compatible withBearcom: BC10, BC20, BC90, BC95, BC120, BC130, BC250D This heavy duty headset nicely isolates the noise around you. It not only grants 24dB noise reduction rating, but also is made with comfortable ear pads and sponge. Its adjustable over-head strap is designed to accompany your use of safety hard hats. Additionally, mic cable can be replaced by "Maxtop CABLE-AHDH0032-AX" at cheaper cost so that you do not need to buy a new pricey headset when it wears out.