The Cat Phones S50 is designed to take a serious beating

There are ruggedized phones like the Samsung Galaxy S5 Active, and then there are ruggedized phones like the Cat S50. The new smartphone from Cat Phones is the sort of chunky and manly design that you'd expect from a phone bearing the Cat brand (which Bullitt Mobile has licensed from Caterpillar Inc), and it backs that up with durability credentials, including IP67 waterproofing and dustproofing and Mil Spec 810G compliance for temperature, shock, vibration, impact, and more.

source: androidcentral