The Fourth Generation Ipod 20GB is an MP3 player made by Apple.
The Ipod 20GB looks pretty nice even though it is the best part of 6 years old at this point, the case is made from a shiny white plastic and the back is made from a reflective chrome. The face of the unit is very uncluttered with only the screen and scroll wheel. Compared with newer models it does have quite a chunky look but for a 6 year old gadget, I'd say it looks pretty good.
The Ipod interface is one of the most easy to use, you simply rotate your finger around the scroll wheel and this will go through the menu you can navigate your songs by artist, album, genre and so on. There is also a nice backlight included so you can view the screen in the dark or poor lighting conditions. Unfortunately there is no colour screen though they added it later with the Ipod Photo.
The Ipod 20GB has around 18.5GB of space for you to actually use though this has always been enough for me, I have just over 6GB of music and that's around 1400 songs. To fill up the extra room you can use the Ipod as an external hard drive though read and write speeds are pretty slow.
In addition to music playback there are a few extra features you can look at a clock, store your contacts on it, view a calendar, view your notes and play games. The games included are brick which is a breakout clone, parachute a game where you shoot down helicopters, solitaire and music quiz where it will play a song at random and you have to correctly identify it.
Dissapointingly it hasn't aged well and my Ipod has developed alot of flaws during its past years, for a start the battery life has been poor averaging around 6 hours of music playback on a full charge, secondly it doesn't like the gapless playlists that the new Itunes software uses and will stutter while playing pack some of my songs and thirdly it will never turn on unless I hold the power and menu buttons which are used to reset the machine!
The Fourth Generation Ipod 20GB was a great MP3 player when it worked correctly but it simply has to many problems and a poor battery life to be worth using now.