Samsung MicroSDHC 4Gb Std. Guaranteed by a Class 6 data transfer speed rating, this 4GB Std MicroSDHC with transfer speed up to 24 MB/s allows you to store more photos, music, videos and apps. 4-proof technology protects your data as this card is waterproof, magnetic proof, xray proof and temperature proof. This is the perfect solution for casual mobile device users as it is the perfect compliment for any point-and-shoot digital still or video camera. H 89, W 138, D 4.5 mm.