Shop for Electrical at The Home Depot. The Cat B100 is a phone that thrives in tough conditions. For one thing, it's dustproof and waterproof for 30 minutes when submerged up to 1 meter (3 ft. 3 in.). It's impact-resistant too and can easily survive a drop from 1.8 meters (5 ft. 11 in.). Ambient noise isn't a problem: With its noise-canceling microphone and high-quality speaker, you'll hear the caller and they'll hear you, loud and clear. Above all, this phone is a survivor: it'll thrive in temperatures as low as -25 C (-13 F) and as high as 55 C (131 F).