Micro SDHC 4GB - Class 4 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. Product Number: 44002 Capacity: 4GB Write Speed: 4MB/Sec Read Speed: 4MB/Sec * microSD Logo is a trademark It’s of great importance the client verify previous to any memory purchase the official device documentation state its compatible with the microSD standard and the desired capacity. Part of the capacity is used to format and perform other functions and thus is not available for data storage. 1 megabyte (MB) = 1 million bytes, 1 gigabyte (GB) = 1.000 billion bytes, 1GB = 0.93Gib/953.67MiB Write and Read Speeds as stated by manufacturer, specifics may be obtained contacting directly their technical department. Reflected speeds may not be attainable under some circumstances, and depend on hardware, software and settings used. x=150KB/sec