The CAT B100 from Caterpillar is the ideal phone if you need a handset to withstand some tough working conditions. The outer casing is waterproof for up to 30 minutes in 1 metre of water, dustproof and will bounce back from a drop from 1.8 metres. The handset has a clear and loud built-in loudspeaker and a noise cancelling microphone so you can still hear and be heard in noisy places and the keypad can be used even when wearing gloves. The CAT B100 can handle extreme temperatures too from -25 degrees C to plus 55, this phone thrives. The phone features include a 3.15-megapixel camera, microSD card slot and a multimedia player. Connection-wise you get all the essentials including 3G, Wi-Fi and GPS making this a tough phone with all you could need.