A:AnswerUnsure on specific accurate distance but i can be indoors with one and kids in pool outdoors and they are Crystal clear and that is a good 25-30 yards away and through the walls
A:AnswerMy walkie-talkies stay on with the blue light lite on without turning off. I charged them for over 4 hours until the lights went out and they were fully charged and they work great. Be sure you are fully charged and I hope they stay on for you!