firmware 1.20, but not by later versions. Firmware 1.20 is no longer available for download from Cowon. iAUDIO F2 In September 2006, Cowon System Inc. released the iAUDIO F2. The F2, with a design similar to a mobile phone, was the successor to the F1, and very similar to the U3 in features. Instead of the F1's OLED display, it featured a color LCD display. The iAudio F2 has a 1.3-inch display with 128x160 pixels, up to 2 GB of flash memory, line-in recording, 22 hours of audio playback on a single charge, and the usual Cowon supported codecs: MP3, WMA, WAV, OGG Vorbis, and even FLAC for lossless audiophiles. Apart from FM radio, voice recording and line-in recording, it also featured video playback as well as photo and text viewing. The interface symbols indicate that it has an inbuilt FM radio and voice recorder. This 2-gigabyte device weighs 39 grammes and measures 34.4 x 72.9 x 16.7 mm. iAUDIO 7 In June 2007, Cowon announced the iAUDIO 7, a player based on the iAUDIO 6 but with 4, 8, or 16 gigabytes of flash memory instead of a hard drive. The OLED screen from the iAUDIO 6 model was replaced by a TFT with 260,000 colors (18 bit colour depth). The device used a swing-control. Audio recordings could only be saved in WMA format, with a user selectable bitrate of 64, 80, 96, or 128 kbit/s. The device played MP3, WMA, FLAC, Ogg Vorbis, WAV, and ASF audio files as well as Xvid videos. The frame rate of video playback was limited to 15 frames per second. It was produced in Korea. Unlike its predecessor, the iAUDIO 6, the iAUDIO 7 had no USB host (USB On-the-Go) capabilities. iAUDIO U5 In August 2007, Cowon announced the iAUDIO U5 at IFA 2007. The U5 featured Windows DRM10 support as well as MP3 and WAV (Ogg and FLAC supported with updated US firmware v3.16). There was no support for video. The U5 came in 4 and 8 GB versions with a LCD with 128×160 resolution and 65 000 colors. The U5 had a 24-hour continuous audio playback time. iAUDIO E2 In November 2009, the iAUDIO E2 was released. The iAudio E2 has no screen which means it fully operates four buttons, two on each side, and voice cues. The button location is at the same place on both sides of the