... left or right ear;Length of boom mic: 12cm;D-ring made of environmental friendly soft rubberTwo way radio /walkie talkie Earhook headset for Motorola T270,T280,T5100,T5200 ... ,T6210,T6220,T6250 T6300,T6400,T7200 MJ430 T6550, SX600, SX700 Two way radio /walkie talkie Ear hook headset for Motorola T270,T280,T5100,T5200,FR50,FR60