Bulk Pack of 10 4GB USB Flash Drives - Multipack Memory Stick Pendrive Thumb Drive - FEBNISCTE Color Assorted Waterproof Bracelet Pen Drive for Data Storage Compatibility - Pendrive is compatible with USB 2.0 and all types of operating systems(Windows 7, Windows 8,Windows 10, Vista, XP, 2000, ME, NT Linux and Mac OS,etc.) Confidence - Flash drive focus on providing you with secure,reliable and portable storage devices and offering hight quality product. Idealism - 10pcs 4GB pen drives. Allows you to segregate music, documents, movies, pictures ,etc. Good gifts for Mom, Dad, Child, friends on Mother's day, Father's Day, Children's day and Christmas Day. Fine choice for advertisement- allow to print LOGOs and advertisement. Convenience - Wrist band design usb flash disks, take it all with you. Convenient Storage and Portability. Warranty - FEBNISCTE provides 100% RISK-FREE SATISFACTION GUARANTEE, professional after-sale service, 30-days money back or replacement. Contact us by email once you have any problem with the product.