Stainless Steel Waterproof Key USB Flash Drives1. Brief descriptionThis Stainless Steel key USB flash drive, which is not only a storage for files, but also a gift for friends or company promotions, it can be customized with any logo designed. This key USB also have a waterproof function to protect files in case any special situation in water. 2. Quick Details●Material: Metal●Size: 57 x 24 x 3mm●Printing size: 33 x 8mm●Printing technique: Laser engraved, silk screen print3. SpecificationsTransfer rate: High speed 2.0Capacity: 512mb-64GBWorking Temperature: 40 C - + 70 CSupports:  Windows XP Professional / Home Edition / Windows 2000 Professional / Windows Me / vista/7/8/10Compatibility: Tablet PC and other Devices with OTG FunctionData Retention: 10 years minimumPlug-and-play: no external power supply required, USB bus poweredProvide OEM service, logo printing, data preload, auto-run customized programming etc.Certification: CE/ROHS/FCCWarranty: 5 yearsChips brand: Toshiba, SanDisk, Samsung high quality chipsSpeed: USB 2.0: Read 8MB/s, write: 6MB/s USB 1.1: Read 1000KB/s, write 900KB/s4. Additional servicesMake auto-run files into the USB Memory StickPreload files or make non-deleting filesRename the disk