Retevis RT-A1 Children Walkie Talkies 22 Channel FRS/GMRS LCD Display Rechargeable VOX Monitor Scan CTCSS Emergency Alert 2 Way Radio for Kids (Pink, 1 Pair) Have a charger and rechargeable batteries, easy to connect the charger connector to the charging Small and light,Portable and endurable: 65g radio is easy to carry, durable material will extend service life This walkie talkie is 1 W,other walkie talkie on the market is 0.5W;So,it have a further communication discantce Whether how many Retevis RT-A1 Walkie Talkies, it will work as long as the walkie talkies use the same channel Wireless communication range up to 9000 feet depending on environment and terrain