Parent-child interaction:Improve the relationship between parent and child Long distance: Device that converts the energy of electromagnetic waves traveling through space into radio frequency electrical energy and transmits it to the receiver. , which is perfect for children. This small size and weight has made these walkie-talkies very suitable for children. Clear sound: walkie-talkies with the adjustable volume level. The channel scan feature helps find others in your area. This is a very user-friendly feature for kids to easily find their friends. Various Kids Toy Functions: Grarg Kids walkie talkies have call reminder function, crisp and smooth sound quality with adjustable volume level and key lock function. it also has the function of anti-interference to effectively reduce noise and improve the fun of parent-child interaction.