ioSafe Rugged Portable 250 GB USB 3.0 External Hard Drive (PA50250U1YR) Crush resistant to up to 5000 lbs (Ti) and 2500 lbs (Al) yet weighs as little as a pound (Al) For Mac compatibility this Hard Drive requires reformatting. Refer to Application Guide for guidance on this Full suspension in all six axes of motion. Full immersion in diesel fuel, oils, hydraulic fluids, aircraft fuels Continuous exposure to UV, blowing sand, blowing dust, rain, salt fog, icing or freezing rain. Protects data from flood, full submersion, 10 ft depth,72 hours fresh or salt water