Zectron Digital Trade Twin Pack 2 x 16GB Memory Card Our 16GB Class 10 High Speed SDHC Memory Card class 10 is ideal for all uses, including HD video recording High Speed Sports Photos and High Speed Multy Shots especially with high megapixel rating due to it's very high speed. In our tests these cards show a sustained read speed above 17mb/s and a sustained write speed above 15mb/s making them faster than most other Memory Card class 10s on the market. This product is brand new and comes supplied in a protective Memory Card class 10 case. Class 10 SD Memory Card class 10s are the fastest speed available and can cope with very large files without the risk of playback lag. If you are using an SDHC Memory Card class 10 in a Digital Camera SD Secure Digital Card with very high megapixel rating or recording HD video we would recommend using a Class 10 card for optimal performance.