Portable microSD/SD flash memory duplicator SD300 copies from one source to two targets simultaneously. Simply power on, then press one button to start copying. Progress (percentage completed) can be monitored on screen. SD300 also comes with utilities to format and diagnose your SD/microSD cards. Compatible with SDHC. Lasts 4 hours copying or 10 hours standby when powered by AA batteries. Package includes SD300, power cord, user guide, and 3 microSD-to-fullsized-SD card adapters. Dimensions 1in X 5.25 in X 3.5 in