INSMA For 32GB SDHC Digital SD Flash Memory Card Class10 High Speed For Digital Camera Reader 100% brand,high quality and New Product Voltage: 3.3V,Memory Capacity: 32GB Class 10: 10 MB/sec minimum data transfer rate Size: 24mm X 32mm X 2mm/0.94'' X 1.26'' X 0.08'' Security: Built-in write-protect switch to prevent data loss