Warranty - FEWINA strive for the highest standards of the products and for the satisfaction of all our customers. All zip drives go through multiple tests before being sended you. Our professional after-sales team will also give you considerate service and answer all your questions. Specification - Capacity: 32GB ; Interface: USB3.0 ; Compatibility: Compatible with USB3.0 and below, support Windows 7 / 8 / 10 / Vista / XP / 2000 / ME / NT Linux and Mac OS ; Material:Walnut Wood ; Box's Outside Dimension: 3.15"x2"x0.78"; USB's Dimension: 2.36"x1.1"x0.39". Classic & Elegant Design - Each wood USB stick are secured by two magnets embedded inthe cap, the body can easily find the cap. The wood case provides great protection for the date you put in the flash drives. The box is also secured by one magnet, which provid additional protection for the USB. USB3.0 Super High Speed - 5 times faster than USB 2.0, reading speed up to 100 MB / s and writing speed from 20 MB / s to 35 MB / s. It takes no effort to transfer HD picrures or videos in the flash drives. Ideal Gift - Classic and elegant wood usb stick and box set are made from black walnut wood. Both the box and USB can be engraved with logo, design or the words of wishes. It could be a very unique and impressive suprise. A gift for birthday or anniversary,for photographers to send to their customers, or just for sharing moments with friends and families.