512MB Secure Digital Sd Card 60X Hi-speed Water/esd Proof Slc High data transfer rate: 60X rated. Up to 10MB/sec. Waterproof, dust proof, ESD proof, and extremely temperature resistant Extremely Portable: They weigh less than 2 grams Includes selectable Write Protect Switch Lasts up to 10 times longer than generic SD (MLC) memory.