K head 2 pin; compatible with Retevis RT22 RT21 RT68 RT68H H777 H777H RT27 RT86 RT86A RT86S walkie talkies; compatible with Pxton, Baofeng BF-888S/BF-T26, Kenwood; upper jack is 3.5mm and lower one 2.5mm Ear hook design; fit to your ear; very soft and comfortable; earhook can rotate to fit in with left and right ears Radio earpiece uses a soft sponge cover; provides you with crystal sound at the same time; makes your ears very comfortable and enjoyable Large PTT button; PTT ergonomic design; allows you to easily operate with gloves 360° rotatable and movable back clip; convenient flexible and practical; easy to attach onto any place of your clothes We are determined to create a comfortable headset with good sound quality. Earhook design. Integrated earhook design, suitable for left and right ears, meeting your requirements for comfort and safety.PTT buttonBig PTT makes your every touch easy and fast.k head 2 pin: Compatible with most popular walkie talkies having 3.5mm and 2.5mm jacks.PU cableHigh tension material making it not easy to break off.Safety headphones are excellent for fast food, restaurants, schools, clubs, shops, supermarkets, hotels, companies, manufacturers, interior design, theaters, IT technology etc.Package include:4XRetevis EEK008 Earhook Earpiece with Mic