Feature: 1. Dual Frequency Band & 128 Channels: The device supports VHF/ UHF frequency bands and 128 signal channels, you can easily change the frequency and channels easily to keep your communication more stable and safer. 2. Long Range Communication: This Walkie-talkies can communicate up to 5-7km in places where there are no obstacles. In some cases it is more stable than a mobile phone, especially in remote areas or in the wild where the reception is poor. 3. Large Capacity Battery: The walkie talkies is equipped with a 4800mAh large capacity lithium battery, built to go the distance. You can charge the battery through the charging base and power adapter included in the package conveniently. 4. More Powerful Functions: The interphone supports various of powerful and practical functions, such as FM radio, dual PTT key transmission, editable CTCSS, power saving mode, VOX voice-activated transmission, built-in flashlight, wired copy function and more. 5. Versatile Use: The walkie talkies for adults is suitable for all kinds of situations, such as karaoke bars, nightclubs, hotels, malls, supermarkets, schools, restaurants, warehouses, logistics, outdoor camping, hiking, resorts, emergency rescues, etc. Specification: Channels: 128Frequency Steps: 2.5/5/6.25/10/12.5/20/25KHzWorking Voltage: DC 7.4VWorking Temperature: -20℃~ +50℃Antenna Impedance：50 ohmModulation Sensitivity: 8-12mVBattery Capacity: 4800mAhPower: 10WDimension: 6.5 x 3.3 x 14cm(With Battery & Excluding Antenna)Weight: 240g(With Battery & Excluding Antenna) Package List: 1 x Walkie Talkie1 x Battery1 x Antenna1 x Back Clip1 x Charging Base1 x Power Adapter1 x Wrist Strap1 x Users Manual