At 4 inches tall by 4 inches wide by 1 inch thick, the Digital Album easily fits into a jacket or purse. The unit is ideal for taking to parties or on vacation where you can consolidate all the pictures you've taken and sharing them with all your friends and family. Another use, the main use really, for the Digital Album is in case you run out of camera memory and you have no computer nearby to download the picture - we know that has happen to us. With 20 GB of storage space you'll be able to transfer all your photos from CompactFlash, SD, MMC, Memory Stick, and SmartMedia cards to the Digital Album and continue shooting without worries.