The ZEN is a portable media player designed and manufactured by Creative Technology. This flash memory-based player is the de facto successor of the ZEN Vision:M and was announced on August 29, 2007, to be available in capacities of 2, 4, 8, and 16 GB, as of September 14. A 32 GB model was announced on December 4, 2007, setting a record for storage capacity among flash players. The ZEN is referred to also by the identifier DVP-FL0001 though this does not appear on the unit. The player has a width of , a height of and is thick, making it the slimmest Creative portable media player and the second slimmest Creative player of any type (other than the discontinued MuVo Slim) at the time of its release. Because of its dimensions, the ZEN is advertised to be the "size of a credit card". This is the first Creative player to have a SD card slot (enabling the support of SD and SDHC cards; an optional adapter is needed for microSD and miniSD cards), support for DRM free iTunes-encoded AAC (in a ".m4a" extension), as well as a truecolor TFT LCD display. Specifications SD card functionality The SD card acts as a separate storage volume with reduced features relative to the internal storage volume. SD card content does not appear under the regular menus Music, Artists, Albums, etc., appearing only on a separate "Memory Card" menu item which offers a folder-file browser. Add to Selected, Save As Playlist, Bookmarks etc. are unavailable for SD card content. Playlists stored on SD card cannot be played. This is considered poor by some reviewers expecting the SD card to function as an expansion of the internal storage. Though an Import All command makes copies of SD card tracks to internal memory, it fails to index them (even after Clean Up) hence leaving them completely inaccessible. An advantage of SD card over internal storage is file transfer to the SD card does not require specialist software e.g. can be done by copy and paste from Windows Explorer, either to the card in a PC slot, or to the card in the player slot with the player connected by USB to PC whereupon the card is available as an MSC device. Firmware releases Numerous firmware updates were released very soon after the player's launch, fixing a variety of bugs. The earlier versions have reportedly caused