Usage Tips:Hands-Free Feature :walkie talkie support voice activation(VOX) talking---relax kids hands, send your voice without pressing the TALK button. It is helpful in outside adventures, hiking, camping, riding and other different activities. Best memory giftfor family. Useful Functions : 22 Main Channels 462-467mhz (FRS/GMRS) with Sub-channels, ensuring 2 miles wireless communication. When using the CTCSS (Continuous Tone Coded Squelch System), you are free to use 99 low frequency tones (67-250mhz), your signals willnot be disturbed with this strong anti-interference performance. Friendly Design : Portable and easy to use, 1.2m drop resistant, built-in flashlight for playing at night, day and night companionship. with cool exterior, compact bodies, ergonomic design, channel lock function and simple push-to-talk operation, intendedfor kids aged 3 and up. Easy to Use : Modern compact design. Simple push to talk operation, double click to activate a beep single. Broadcast to one or multiple units, ability to use different channels. Perfect Gift for Children : Kids LOVE to chat by these well-made walkie talkies, its a perfect choice to present your child directly. Great for both indoor and outdoor activities such as going shopping, spring outing and summer camping.