Giinii Digital Frame Good, Simple Digital Picture Frame Can A Digital Picture Frame Be Analog & Digital?

Can a Digital Picture Frame be Analog & Digital? - giinii digital frame good, simple digital picture frame

I have this digital picture frame I want to buy a Christmas present, but there is a problem. They say that an analog / digital photo frame is, what does that mean? How can analog and digital says, the description has a card reader and USB compatible, but I'm so confused! Here is the link
http://www.amazon.com/GiiNii-SH-501-5-Inch-Digital-Picture/dp/B001CAT0NU
Thank you!