Zune HD--photos

The OLED screen technology used in the Zune HD offers many advantages over the more common backlit LCDs found in most mobile phones and portable media players, but potential buyers should be aware that OLED performs poorly in direct sunlight. Testing the iPod Touch and Zune HD outdoors on a sunny afternoon, with both players set at full brightness, we found that the Touch offers noticeably better visibility than the Zune.