http://uk.transcend-info.com/Products/CatList.asp?LangNo=0&ModNo=488 Key Features: - Supports Ultra High Speed Class I specification - Smooth Full HD video recording performance - Improved camera response for fast-action consecutive shooting - Efficient exFAT file system Features: - Supports Ultra High Speed Class 1 specification (U1) - Class 10 compliant - Fully compatible with SD 3.01 standards - Supports exFAT file system - Easy to use, plug-and-play operation - Built-in Error Correcting Code (ECC) to detect and correct transfer errors - Supports Content Protection for Recordable Media (CPRM) - Supports auto-standby, power-off and sleep modes - Mechanical write-protection switch - RoHS compliant - Limited Lifetime Warranty Specifications: Size: 32mm x 24mm x 2.1mm Op. Voltage: 2.7V~3.6V Op. Temperature: -25°C (-13°F) to 85°C (185°F) Durability: 10,000 insertion/removal cycles Weight: 2g Transfer Rate (Max)* 45MB/s 300x *Note Speed may vary due to host hardware, software and usage