Kimtigo Made in Taiwan Micro SD Card 8GB Class 4 with Mircro SD Adaptor for Cell Phones, Digital Cameras and more Meets standard, read and write speeds of up to 4-5MB fast. Dimension is only 1/4 of the standard SD Card. With large capacity storage space. Can greatly enhance the mobile phone and other gitial devices' storge space. Class 4 Micro SD card with 8GB storage space. Waterproof, Shock proof, Magnet proof, X-Ray proof 1 year warranty. suitable with OS eigher Microsoft XP/VISTA/7/8 or MAC Made in Taiwan. Reliable data copy, download and back up. With SD adapter, external memory card for your devices