The iPod Touch is a multimedia player for music, video and image files. The 8-mm-thin device is pleasant to hold and its smooth front gives it a stylish look. By way of contrast, the back of the player, made of stainless steel, conveys durability and value. The round forms of the pictograms reflect the outer shape of the iPod Touch. The device is operated via its touch–sensitive, 3.5” multi-touch surface. Entertainment and Internet functions such as leafing through albums or watching Internet videos can be carried out with a fingertip. The display of the iPod Touch has an ambient light sensor which automatically adjusts the brightness to the individual lighting conditions, thus providing visual comfort while saving energy. By turning the player the user can change the display mode from wide screen to full screen. The device features WI-FI wireless technology and is available in 8 GB and 16 GB models.