Fit Motorola Radio with 2-Pin M1 Connector: MOTOTRBO CP200D, CP100D BPR40D and Other Commercial Radio BPR40, DEP450, EP450, RDM2070D, RMU2080D Also fit Other Retail Radio CLS1410, CLS1110, DLR1020, DLR1060 (Please be aware that Kenwood, Baofeng and Midland radios are not compatible) 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.