... : Specifications Capacity: 128MB,256MB,512MB,1GB,2GB,4GB,8GB,16GB,32GB Dimension: 0.43" x 0.59" x 0.039" ... card3.Compatible with SDHC host devices;not compatible with standard microSD-enabled device/readers4.File Format FAT 325.Reliable lifetime ... / Read SpeedPacking : Blister Packing / Box Packing / Customized Packing8GB Micro SD Card speed tests :2GB SD Card speed tests : micro sd memory card