The Motorola VX-451 two-way radio is ideal for extreme environments, due to its ability to withstand job-site abuse. The VX-451 meets military standards for ruggedness, as well as the IP57 ingress protection standard. Water does not harm the radio, even when submerged to a depth of four feet for up to 30 minutes. Emergency and lone worker alerts are built into every Motorola VX-451 to help monitor worker safety, which makes it ideal for hazardous locations.