The Cat S61 is tough, versatile and can see inside walls - CNET

Sure, Bullitt's Cat S61 makes calls, but how often do you see a phone with a thermal-imaging camera and an air quality sensor? CNET takes a closer look.

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https://www.cnet.com/pictures/cat-s61-rugged-flir-thermal-bullitt-mwc-2018/#ftag=CAD590a51e