Brand Overseas Star Model N/A Quantity 1 Color Black + transparent Material PVC Features Throat control noise cancelling earphones Specification Throat control earphones noise cancelling supplies clear sound; Throat vibration mic to pick up sound from vibration of throat directly can cancel over 90% noise; The diameter of the vibration is 10.7cm the vibration ring is built-in elastic stainless steel ring; The connector is rotatable; Easy to wear Application Walkie talkie / two way radio Packing List 1 x Earphones 1 x Throat control ring 1 x Magic tape 1 x Earbud