NW-E403

The NW-E403 was a Europe-only 256 MB variant of the fifth-generation E Series Walkman Stick family. It offered built-in flash storage for ATRAC and MP3 playback, an OLED display, up to 50 hours of use from a lithium-ion battery, and the perfume-bottle-inspired body that defined the new stick form.

The narrow upright design changed how the E Series felt in use. It was still a compact flash player, but it now read more like a designed personal accessory than a miniature utility device. The body, display, and long battery life made it easy to carry while giving Sony's flash Walkman a clearer visual identity.

This generation helped establish the Walkman Stick language that would echo into later E Series and A Series designs. Compactness was no longer the whole story; style became part of the product behavior.