Device & dimensions: The Sony NW-E003 is a 25-gram flash mp3 player. The dimensions of the player are 2.50 x 7.90 x 1.40 centimeters. The playing time of the Li-Ion battery is (28 hours in succession). The Sony NW-E003 is available in black, pink, purple, blue and gray.
Memory and connectivity: The Sony NW-E003 has 1 GB of internal memory. There are no camcorder expansion slots available. The Sony NW-E003 connects you to USB 2.0 via USB 2.0.
multimedia: With the Sony NW-E003 you can play MP3, WMA and ATRAC3 music files. The quality of these files is equal to CD quality. This Sony also features a built-in FM radio for live radio on the go .. A voicemail is missing below.
Translated from: http://www.portablegear.nl/sony/nw-e003/review/
For the example on how to use the ISP I used the following website:
http://glumb.de/en/arduino-as-isp-to-change-the-bootloader
If you want to download my edited sketch file, click the following link: SonyISP.ino .
After all this years I found the original box from this walkman even completely with original manuals.
These original manuals can, if you like, be downloaded here: NW-E003 User Manual
For this project I used an Arduino Nano from Banggood. Here are some pictures from the project.