1The theoretical communication distance is about 3KM, which is very useful. 2Carry back clip, easy to carry, easy to use. 3Three AAA batteries are used for power supply, standby time is over 24 hours, convenient to replace the battery. 4Children's Walkie-Talkie is suitable for communication. It is simple, economical and convenient. 5You can interact with your child very well. It is a very good toy walkie-talkie.