enfain 32gb usb 2.0 flash drive multicolor 10 pack for data storage and distribution, in 10 mixed colors enfain * model:swivel classic usb flash drive (sw) * casing materials: aluminum and plastic * chip: grade a, original brand flash memory chip * size: 2.24" x 0.75" x 0.43" (folded) | 57*19*11mm(folded) * weight: 9g/ unit; 140g/10pack * colors: black x1, blue x1, red x1, green x1, white x1, orange x1, purple x1, yellow x1, gray x1, pink x1. * interface: usb 2.0, backwards compatible to usb 1.1 * 8gb-32gb speed: write speed:6mb/s-8mb/s; read speed:15mb/s-18mb/s | 128mb-4gb speed: write speed:4mb/s-6mb/s; read speed:12mb/s-15mb/s * operating system: windows xp/ 2000/ vista/ 7/ 8/ 8.1/ 10/ nt linus/ mac os 10.4 and higher (compatibility may vary depending on user's hardware configuration and operating system. ) * 8gb-32gb default format: fat32 | 128mb-4gb default format: fat * durability: 50,000 times read & write * operating temperatures: 32o f to 140o f (0o c to 60o c) * storage temperatures: -4o f to 185o f (-20o c to 85o c) * application: save & move digital data as photos, videos, music, artworks, programs and other documents.