I have been using WD external hard drives for years.  They are easy to use and this one was no exception.  It was ready to use right out of the box.  You can use it to back up your files or use it as a drag and drop drive, which I prefer, as I store thousands of digital photos.  The size is perfect and slips right into the cell phone holder in my purse.  Love it! 

Question: How is the size of the camera?
Answer: The size is perfect