Judging from the feature set, the X20 is pretty similar to the original iRiver Clix: FM radio, MP3/OGG/WMA, AVI (MPEG-4)/WMV9, photo viewer, etc. What differentiates the players (aside from their appearance) is that the X20 has a mechanical scroll wheel instead of D-click navigation and a couple of features such as an SD card slot and a built-in speaker. The scrollwheel, however, is a little small. It also doesn't have any Flash support, although great sound quality make up for its shortcomings.
Controls are simple. There is a hold switch, a back and power button. A five-way control center dominates the proceedings and it works as a UMS (universal mass storage) device as well, so the drag-and-drop of files poses no problems. The X20 fulfills the standard feature requirements of the average PVP Source
Judging from the feature set, the X20 is pretty similar to the original iRiver Clix: FM radio, MP3/OGG/WMA, AVI (MPEG-4)/WMV9, photo viewer, etc. What differentiates the players (aside from their appearance) is that the X20 has a mechanical scroll wheel instead of D-click navigation and a couple of features such as an SD card slot and a built-in speaker. The scrollwheel, however, is a little small. It also doesn't have any Flash support, although great sound quality make up for its shortcomings. 
