Retevis Hands Free Earpiece for Walkie-Talkie, Acoustic Tube, VOX, 2 Pin,for RT22 RT68 RT21 H-777 RT86 RT27 RB45,Compatible with Pxton SAMCOM Two Way Radio,Security Earpiece for Radios (4 Pack)

Hands-free earpiece; turn on VOX function both at walkie-talkies and earpiece; walkie talkie earpiece with VOX; let you talk directly with your buddies ^^ Standard compatibility; upper pin 3.5 mm; bottom pin 2.5 mm; compatible with RT22 RT21 H-777 RT68 RT19 RT27 RT28 walkie talkies; etc ^^ Secret air earpiece; transparent tube is not easy to find; suitable for security; bodyguard at airport; club; concert; etc ^^ Stretchable length; the length of PTT to earplug can be stretched from 40 cm to 90 cm; ideal for team members of different heights ^^ One spare earplug which can be replaced simply and quickly; is coming with the package; earpieces provide more hygienic experience