Sony today launched its first MP3-compatible flash memory Walkman, reports Reuters. The new Walkman NW-E99 and NW-E95, play songs in MP3 format, as well as Sony’s proprietary ATRAC technology. The NW-E99 carries a suggested retail price of €240 and features a 1GB flash memory drive, while the NW-E95 holds a 512MB flash drive and sells for €200. Both players, which Sony only plans to release in Europe, will offer about 70 hours of battery life.