Ruyage Radio Analog Signal Walkie-Talkie(RY13)About this item Small and compact size; ultra thin 2 way radios; the size make these less cumbersome than any other radios; easy to tuck into a shirt pocket or attached to a lanyard Easy to use walkie talkies; designed with dot matrix screen; large display screen can provide you with a clearer and easier operation; display the channel; volume; transmission status and other working status Good Battery life; built in up to 2000 mAh lithium battery;