This Retevis NR30 GMRS Two-way Walkie Radio is perfect for use on construction sites and other outdoor activities. With 30 channels, a wireless range of 2.5KM-13.8KM, and a power of 5W, this radio is designed to provide reliable communication in any situation. Its black color, sleek design, and IP67 waterproof feature make it a stylish and practical choice for anyone who values durability and functionality. In addition to its basic features, this radio also comes with a range of advanced features such as Low Battery Alert, Scan/Monitor/Squelch, Channel Lock, Waterproof, CTCSS, Busy Channel Lock, Local/Remote Alarm, 50 CTCSS Codes/210 DCS Codes, IP67 Waterproof, 2800mAh, Channel Monitor, VOX Delay Time, VOX Hands-free, Two-way Noise Reduction, and Time Out Timer. These features make it a versatile and powerful tool for communication on any outdoor adventure.