Easy to use and handle; No matter how many RT22 walkie talkies you have; just switch them to the same channel to work together; Also can work with Retevis RT68 RB17 RT69 two way radio etc ^^ Light weight and compact; Compared with most other walkie-talkies; RT22 walkie talkie is more easier to carry; you will not feel any heavy feeling ^^ License-free two-way radios; no license required; can be used legally and safely in the United States ^^ VOX hands-free function; After activating this function; no need to press the PTT button; just need to speak to the microphone of the walkie talkie; the signal will be transmitted automatically ^^ USB charging allows you to charge it at any time; 1000 mAh battery supports 10 hours of battery life; 5% reception; 5% transmission; 90% standby