RUICHENXI Waterproof 256GB USB Flash Drive Pen Drive Memory Stick with Keychain Limited Time Offer - Buy NOWLAST ITEM AVAILABLE Technical details: Write Speed: 15MB/s 50MB/s Read speed: 70MB/s - 100MB/s Interface: USB 2.0. Fully backward compatible to USB 1.1 Chip: Grade A, original brand, time and time again for 100.0000 time. Operating temperatures: 32 F to 140 F (0 C to 60 C). Storage Temperature:-4 F to 185 F (20 C to 85 C). Shelf Life: more than 10 years. Shelf Life: more than 1000 times reading and writing. Compatibility: Desktop, Laptop, Tablet, Speakers and all with USB port that allows for data transfer. Operating System: Supports Windows 10, Windows 8, Windows 7, Vista, Windows XP, Linux, Mac OS 10.3 and later. Best gift idea: Wonderful Stocking Filler, Excellent Price, Ideal Gift For 18th 21st 30th 40th 50th 60th 70th 80th 90th Birthday, Christmas, School registration, graduation, exhibitions or as a promotional gift. Waterproof USB Drive: This flash drive completely resistant to water, so can be used normally after drying the water invaded from outside, also it can resist dusty, static,magnetiism and high temperature.Metal Buckle: Metal hanging buckle design enables this flash drive to attach to your keys or a lanyard, makes it not only a practical tool for data storage, but also a piece of elegant decoration craft.Durable and easy to carry. Nickel plated aluminum surface looks pretty, and it ensures durable long-time usage and keeps your storage safety. Small size make it very easy to carry.Easy Installation. Plug and play, no need to worry about missing covers with direct access to the USB ports. USB 2.0 super speeds to save time when transferring, sharing or storing files, easily to share your work files between computers.Wide Compatibility. Compatible with computers, smart TVs, music players etc. digital devices which come with USB ports.