999 yen SD card MP3 player "DN - 2000 Black"

It is 999 yen including tax. The buttons on the main unit are only five buttons: play, tune forward / return, volume large / small. Also, it will be an SD card reader just by connecting with a computer with a USB cable. This is a AAA alkaline battery (continuous playback time 5 hours) drive.
this
http://item.rakuten.co.jp/donya/50073/

SD card supports up to 1 GB. Is it for those with SD cards that are no longer used?