The Motorola RDU4160D RDX Business Series Two-Way UHF Radio with Display is just what you need on that job site. Whether indoor or outdoor, this radio delivers its crisp and audible signal with confidence. Versatile and rugged, the RDU4160D will not only provide clear audio transmission, but will also stand up to the most demanding physical conditions. Rain, wind, or fog – this unit will withstand them all. Motorola built this water-resistant unit with heavy-duty on-site work in mind.