This microSDHC card from Lexar works in SDHC compliant mobile phones, digital cameras, MP3 players, PDAs, and other microSDHC enabled devices. Store up to 1,000 songs; 4,494 photos; or 1,280 minutes of video*. In the ever-changing world of mobile technology, you need a memory card that can keep up with the demands of the latest applications found in today's feature-rich devices. Specifications Manufacturer/Producer: Lexar Reference: LSDMI4GBASBEU EAN: 650590155545 Capacity: 4 GB Sealed Retail Blister Packaging Lexar 5 year limited commercial warranty NOTE: MicroSDHC memory cards are only compatible with devices that support the SDHC format and are not backwards compatible with standard SD, miniSD or microSD devices. It’s of great importance the client verify previous to any memory purchase the official device documentation state its compatible with the new SDHC 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