Samsung 32GB BAR (METAL) USB 3.0 Flash Drive (MUF-32BA/AM) High-quality metal casing for durability with key ring to prevent loss NAND Flash Technology Water proof, Shock proof, magnet proof, temp proof, and X-ray proof with a 5-year warranty High-speed USB 3.0 flash drive for fast data transfer Operating temperature is 0 to 60 degree celsius. Non-operating temperature is minus 10 to 70 degree celsius