Description After-Sale Warranty: After-sales Service: Return and Replacement We are committed to providing customers with better products and services, so we continue to upgrade product quality, improve the professional skills and service awareness of the service team. If your product has problems due to some accidents, please don’t worry, we will provide lifetime technical support and 90 days free replacement or full refund service. Specifications: Write Speed: 5MB/s-8MB/s Read Speed: 15MB/s-21MB/s Material: Metal Color: Silver Size: 48mm×12mm×8mm Operating Temp: -30℃ – 60℃ Storage Temp: -20℃ – 60℃ Operating System: Supports Windows 10 / Windows 8 / Windows 7 / Vista / XP Linux / Mac OS, Compatible with USB 3.0 and below. Product features: 1.Keychain design, easy to carry. Lightweight and durable. 2.Mini design for you to put it in your pocket or small space. 3.Fast data transfer for photos, movies, music, software, programs, handouts, brochures, etc. 4.Ensure data safety by copy backup Please note: Some of the listed capacity on a flash drive is used for formatting and other functions and is therefore unavailable for data storage. Therefore the actual available capacity for data storage is less than what is stated on the products. Waterproof Metal USB Stick: USB Stick shell is made of aluminum alloy, waterproof, dustproof, antimagnetic, shockproof, antistatic, and high temperature resistant. If you accidentally drop the U disk into the water, you can continue to use it after drying. Plug and Play: No need to install any software, no need any drivers, just plug into the usb port of the computer or other devices to use.No drivers ,easy installtion and use. Easy to Carry: USB flash drive weighs only 17g, is as big as an adult’s thumb, and has a key ring on the top. You can connect it to your backpack or wallet to share data anytime, anywhere. Wide Compatibility: Batman USB memory stick supports almost all operating systems, including Windows 7/8/8.1/10/2000/XP/ME/Vista, Linux and MacOs 10.3 and above. Supports PCs, tablets, laptops, TVs, cars, audio and other usb compatible devices.