***** *****RT46 is an upgraded version of h-777 walkie talkies; FRS channels is no certification needed and legal issues; easy to use for both adult and children; compact and small design is easy to carry with you*****Clear sound and excellent distance for every adventure; smooth and clear call even outdoors; a built-in LED flashlight is there for you in an emergency; as well as emergency features to ensure your outdoor activities stay safe*****Charge through your adventures: there are two ways to charger your radio: use the included Li-ion rechargeable batteries or use 3 AA batteries (not included); USB charging cable supports fast and safe charging of two walkie-talkies*****High quality built-in speaker on the radio provides louder and clearer sound; come with earphone piece; everyone has the option to use the ear piece to keep your hands free; vox function can achieve hands-free operation by voice*****Walkie talkies adults is compatible with other models under brand; RT46 can directly