Adventures abound with these best-selling walkie-talkies. 22 channels provide clear, crisp sound over long distances. A keypad lock prevents accidental changing of the channel, meaning kids can explore by themselves and still keep in touch with adult caregivers. There is no limit to the number that can be connected - as long as the walkie-talkies are on the same channel. Additional features include adjustable volume, battery status indicator, auto-squelch (to mute background noise) plus an LCD display. Lightweight, backlit and simple to use - perfect for kids sharing and their fellow explorers. Set requires 8 AAA batteries, not included.