SanDisk 64GB Class 4 SDXC Flash Memory Card, Frustration-Free Packaging- SDSDB-0 Limited Time Offer - Buy NOWLAST ITEM AVAILABLE SanDisk 64GB Class 4 SDXC Memory Card General Features: Secure Digital Extended Capacity (SDXC) form factor 64 GB capacity Class 4(4 MB/s transfer rate) Built-in write protection switch Waterproof Shockproof X-Ray proof Compatible with SDXC and SDXC-I devices Cards include security feature for protection of copyrighted dataCompatible with SDHC/SDXC and SDHC-I/SDXC-I for SDXC compliant devices. If using in older SD or SDHC host device ( or prior), please check with manufacturer for compatibilitySpeed performance rating: Class 4 (based on SD Specification)Writeable label for easy identification and organization. Operating temperature: -13F to 185F (-25C to 85 C). Storage temperature: -40F to 185F (-40C to 85C)High quality and reliability backed by a 5-year limitedDurability tested to protect your memories from life's mishaps - water proof, shock proof, x-ray proof, temperature proof