The Motorola RDU4100 two-way UHF radio is just what you need on your next set. Whether indoor or outdoor, this radio delivers it's crisp and audible signal with confidence. Versatile and rugged, the RDU4100 will not only provide clear audio transmission but will stand up to the most demanding physical conditions. Rain, wind, snow - this unit will withstand them all. Motorola built this water-resistant unit with heavy duty on-site work in mind. Don't rely on your crews to communicate via cell phones that may be on silent or dead. Give them the ability to work efficiently using professional grade radios.