Enhance your mobile life with Kingston's microSDHC removable memory card. This versatile card expands the memory capacity of feature-rich mobile phones. Store more of your own collections of: music, movies, video clips, pictures, ring tones and much more! It's also easier to share the data too, you can either move the microSDHC card between compatible mobile phones, or just use an adapter (not included) to allow the microSDHC to adopt the standard SD size, and function in a card reader. Because of its extremely small size, it consumes very little power from your devices battery, therefore giving your revolutionary mobile devices far longer battery life than ever before. Kingston's microSDHC cards also use the new speed "class" rating that guarantee a minimum data transfer rate for optimum performance with devices that use microSDHC. Wherever you find yourself in the mobile world, you can trust and rely on Kingston's microSDHC cards. All cards are 100-percent tested and are backed by a lifetime warranty and free live technical support. To ensure compatibility, look for the microSDHC or SDHC logo on host devices (e.g. phones, PDAs, and cameras). Features: Capacity: 4GB Class: 4 Standardized complies with SD card specification standards Versatile: when combined with an adapter (not included), can be used as a full-size SD card Dimensions: 0.43" x 0.59" x 0.039" (11mm x 15mm x 1mm) Speed Rating: 8.8 MB/sec. read, 6.5 MB/sec write Operating Temperature: 32° F to 140° F (0° C to 60° C) Storage Temperature: -20o to 85oC / -4o to 185o F Weight: 0.04 lbs (1.41g) Ultra-Portable: extremely small footprint design Guarantee: lifetime warranty.