Retevis Ailunce HA1UV is a long-range waterproof dual-band amateur radio. It is rugged, simple and easy to use, with VFO mode, 2800mAh large-capacity battery, 1.77-inch color screen, and is the best communication choice for outdoor activities. In addition, it also has Sub-PTT function, emergency alarm, key lock function, FM radio, and a series of functions designed for amateur radio operators, disaster preppers, outdoor sports enthusiasts, etc. Whether you are doing outdoor activities, communicating privately with friends, or participating in exciting radio competitions, Ailunce HA1UV is a reliable and affordable choice. Dual Band Two Way Radio,2m/70cm frequencies available for a wide range IP67 Waterproof Walkie Talkie,Withstand 1m depth of water for 30 minutes Built with 2800mAh Battery,.