Feature: 1. One-Click Automatic Pairing: Effortlessly pair various branded machines to serve as frequency meters for your devices. By utilizing identical machine models, you can achieve seamless wireless frequency replication across the entire system. 2. DTMF Selective Calling: Our walkie talkies for adults support individual, group, and all-call functionalities, utilizing simple, swift, and dependable transmission technology for reliable communication. 3. Enhanced Protection for Privacy: Multiple layers of voice encryption safeguard your calls, ensuring the privacy and security of your communications. Upon completion of transmission, the handheld walkie talkies emits a "wow beep" sound to signify the end of the call. 4. NOAA Emergency Weather Alert: These long range walkie talkies incorporate NOAA emergency weather alerts, providing added convenience and safety during your outdoor adventures. 5. Convenient Charging Solution: Equipped with a 2200mAh battery, these radios walkie talkies can be charged directly through the Type-C interface. For added convenience, they can also be charged using the included seat charger. Specification: Power: 5WEffective distance: 1-8 kilometersBattery type: Polymer lithium battery, 2200mAhStandby time: 168 hoursCharging method: TYPE-C charging/dock chargingRated voltage: 7.4VCharge Limiting Voltage: 8.4VNumber of channels: 999 channelsProduct weight: About 294g (including antenna and back clip)Product size: 11x6.5x4cm (excluding antenna) Package List: 1 x Walkie Talkie1 x Battery1 x Antenna1 x Back Clip1 x Charging Base1 x Wrist Strap1 x Users Manual