Cat released the S61, the latest in their S-line in June 2018. This tough smartphone continues the Cat tradition of claiming to be the most rugged smartphone to date. With IP68 and IP69 ratings promise protection from the elements. Fitted with 4GB of RAM and 64GB of storage, the Cat S61 will run and swap between apps seamlessly. The main 16MP camera has integrated thermal imaging helping to monitor and diagnose problems or locate a heat source of up to 400 degrees celsius even in complete darkness. Using the Measure app on the Cat S61 you can quickly with the aid of a laser measure distances while the Air app helps measure the quality of the surrounding air.