Verbatim Premium. Capacity: 64 GB, Flash card type: MicroSDXC, Flash memory class: Class 10, Read speed: 70 MB/s. Product colour: Black Currently the smallest form factor of memory card available, the microSDHC memory cards are designed especially for mobile phones, this tiny memory card consumes very little power, therefore preserving the battery life of your mobile phone. It can also be used in GPS devices, MP3 players, digital cameras and PDA's. The list of compatible devices grows daily and Verbatim microSD memory cards are compatible with all devices that have an SDHC slot when used with the SD adaptor. All cards contain the latest copyright management technology to ensure legal transfer of digital assets (pictures, movies, music etc...) over computer networks for personal use. SD High Capacity (SDHC) is the new SD memory card based on the SDA 2.0 specification and larger than 2GB capacity. Benefits include, larger capacity and higher data transfer speed. The Speed Class Specification classifies performance by Class number and offers the method to calculate its performance. The Class 10 specification indicates a minimum data transfer speed of 10MB/Sec.