**********C-type earhook headphone comfortable to wear for long time work*****Length from PTT to earphone about 7.8 inches; length from PTT to 2 pin about 34.7 inches*****The great replacement for walkie talkies and can provide more convenience*****Suitable for engaged in retailing entertainment hospitality food service and community management industries*****Compatible with H-777 RT21 RT22 RT-5R RT17 RT18 RT19 RT27 Baofeng UV-5R series BF-F8HP BF-888S Arcshell AR-5 Kenwood two way radio and more