What You Get?: 10 Pack 4GB Red USB 2.0 Flash thumb drives, 24-Month Warranty and Lifetime Technology Support. All RAOYI products have been constructed in high standard and tested rigorously before shipping. Please feel free to contact us if your have any question for the product. Wide Application?: The thumb drives can meet business needs and personal use, offer a no-frills, secure, and easy solution to your storage and sharing needs, great for those who worry about the security of emailing files or cloud computing. Broad Compatibility?: Compatible with USB 2.0 and below, works well on PC, laptop, desktop and MacBook etc; And it’s compatible with Windows 7/ Windows 8/ Windows 10/Vista/Windows XP/Windows 2000/ME/NT Linux and Mac OS. Also support portable speakers, car Audio with USB 2.0 port. Easy to Use?: Plug and Play,no need to install any software or driver to use to the flash drive.memory sticks can easily store or back up photos,videos, significant files ,personal and documents, movies, pictures, books, programs,designs and more.free up your device space. Retractable Design?: Adopts to retractable design, keeps the USB connector tucked inside the cg when not in use, protecting the USB interface from damage, and no cap to lose; portable and easy to carry around.