Whether you're hiking, hunting, or just trying to keep track of your fellow explorer, this is a great choice of two-way radio. The set of Walkie Talkies has a range of up to 5 kilometers for indoor and outdoor communication. With multiple channels operating on a 400-480 MHz frequency band, and the standard scan feature, this two way radio makes it easy to stay in touch while you are out and about. They also feature an earphone jack, permitting use of an audio accessory headset for easy hands-free operation. A call tone and roger beep helps you know when transmissions to and from someone are beginning or ending. Each walkie-talkie operates on 8 AAA Batteries (included).