Retevis 2 Pin Walkie Talkie Earpiece Headset with Mic Acoustic Tube Earpiece Compatible Motorola CP200 PR400 CLS1110 CLS1410 GP300 GP2000 P1225 (5 Pack) 2 way radio earpiece fit for Motorola ham radios; with the soft ear buds and clear tube for long period use Covert acoustic tube allows you get private low profile conversations in noise background Thanks to the clip; you could clip the built in mic to your collar close to your mouth for pick up clear and loud voice to transmit; the big PTT provides you totally hands free experience 2 pin standard diameter; Ear 2.5mm stereo (top pin); Mic 3.5mm stereo (bottom pin); Space of two-pin is 8mm Simple and Convenient return process; 60 days warranty provide by us and 30 days no reason to return