Easy to use walkie talkie; no complicated buttons on the body; suitable for family outdoor travel; camping; hiking; cruise Mini walkie talkie; easy to hold; the walkie talkie is made of durable materials; can withstand daily drops Crystal sound quality; 0 to 9 levels squelch; clear reception and transmission in most environments Real 1000mAh battery; can provide 10-12 hours of battery life; mini USB interface; can be charged at any time according to need Out of the box;RT15 walkie-talkie can talk directly with all 16 channel walkie-talkies of retevis; such as RT22