Retevis RT20 Two Way Radios Mini Size VOX FM Rechargeable Security 2 Way Radios Walkie Talkies(Silver, 10 Pack) 0.24 Lb ultralight design plus mini body are easy to hang it on your chest when you are moving around Good range and crystal voice can meet you use in many occasions; Large-capacity battery and USB rapid charge support you long time use The special private code plus scrambling function greatly enhances the security of signal transmission and can easily avoid the interference of unrelated signals Simple function keyboard is very easy for you to operate; PC programmable support them to work with other brand radios easily Simple function keyboard is very easy for you to operate;PC programmable support them to work with other brand radios easily