In 2005, PC synchronization and music management functions were integrated. The product was designed as an integrated structure of hardware and software.
NW-HD5
The NW-HD5 is a second-generation Network Walkman equipped with a hard disk drive. It features a 20GB HDD and supports audio playback in ATRAC, ATRAC3, ATRAC3plus, and MP3 formats. It has an LCD display, a long battery life thanks to its lithium-ion battery, and USB connectivity.
NW-HD5H
The NW-HD5H is a higher-capacity variant in the second-generation hard-disk Walkman family. It offers 30GB hard drive storage with the same ATRAC-family and MP3 support, auto-rotating LCD, user-replaceable battery rated for 40 hours, and features including shock protection and acceleration sensor. It shared the NW-HD5's redesign priorities of extended battery life and improved usability within the HDD lineup. The most collector-coded version of Sony's classic hard-disk Walkman idea. It kept the cleaner and more usable HD5 platform, then pushed it into a more desirable niche, especially in its higher-capacity and Japan-market form. It arrived just as the logic behind hard-disk players was starting to weaken as flash was catching up quickly.
NW-E105
The NW-E105 shared the fourth-generation E Series compact disc-style body with 512MB of built-in flash storage. It supports ATRAC and MP3 playback displayed on an LCD screen and provides around 70 hours of battery life from one AAA cell. It delivers mid-range capacity within the more pocketable redesign of the E Series. The middle-capacity version of the same compact redesign that pushed the E Series further into compact, styled flash hardware. By this stage, Sony had a stable enough formula that the differences between models were often more about positioning and storage than about deeper conceptual changes. It is the practical center of that compact redesign generation.
NW-E107
The NW-E107 is a 1GB Network Walkman part of the 4th generation E series. It features built-in flash memory and supports audio playback in ATRAC and MP3 formats. It has an LCD display and is configured for long-term operation with a single AA battery.
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.
NW-E405
The NW-E405 introduced the Walkman Stick design to the E Series flash lineup as part of the fifth-generation family. It offers 512MB built-in storage for ATRAC and MP3 playback on an OLED display and achieved 50 hours of use from a lithium-ion battery. The perfume-bottle-inspired shape established a new visual direction. This model and its siblings set the aesthetic for later flash A Series and subsequent Walkman models. The model that really introduced the "Walkman Stick" design as a defining object in Sony's flash lineup. By this point, the E Series was being treated as something sleek, lifestyle-oriented, and deliberately recognizable. The OLED display, rechargeable battery, and compact upright body all reinforced a player that felt much more contemporary. It stands as one of the clearest style pivots in the flash Walkman story.
NW-E505
The NW-E505 is part of the fifth-generation E Series Walkman Stick family and the first Network Walkman to include an FM tuner. It features 512MB built-in storage for ATRAC and MP3 playback on an OLED display and provides up to 50 hours from a lithium-ion battery. Its perfume-bottle-inspired design also includes the FM radio function. This model helped establish the visual direction later carries into the flash A Series and later Walkman designs. The model where the Walkman Stick stopped being just a design statement and started becoming a more rounded everyday player. Sony kept the same slim, lifestyle-oriented physical language but added FM radio and a more mature feature balance. It represents a phase where Sony's flash Walkman were becoming more comfortable consumer products.
NW-E507
The NW-E507 is the 1GB flagship of the fifth-generation E Series Walkman Stick lineup and the first to include an FM tuner. It supports ATRAC and MP3 playback from built-in flash storage shown on an OLED display and achieved up to 50 hours from a lithium-ion battery. The perfume-bottle-inspired design incorporated the new FM radio capability. It helped set the visual direction later carries into the flash A Series and later Walkman models. The top-capacity version of the same mature Walkman Stick revision. By this point the E Series had stopped feeling transitional. The player was stylish, compact, rechargeable, radio-equipped, and far more coherent than the earlier flash generations. It stands as the fullest expression of the refined Walkman Stick formula before the line pivoted again into the Beans era.
NW-E305
The NW-E305 introduced the Walkman Beans design to the sixth-generation E Series. It offers 512MB built-in storage for ATRAC and MP3 playback and achieved up to 50 hours from a lithium-ion battery. The bean-shaped body also includes an FM radio tuner. Known by the nickname "Walkman Beans," it sat between the earlier E400/E500 family and the A Series in Sony's flash lineup. The model where the E Series stopped looking like electronics and started looking like something people might actually want to wear around. Nicknamed "Walkman Beans," it pushed the line away from the straight, utilitarian forms of earlier E Series models and into something softer, stranger, and much more obviously styled. The bean-shaped body, FM tuner, lithium battery, and compact all-in-one feel helped move the E Series into a more lifestyle-oriented role.
NW-A608
The NW-A608 is the first 2GB model in the first-generation A Series flash family. It offers built-in storage for ATRAC, MP3, and WMA playback on a black-and-white OLED display and achieved up to 50 hours from a lithium-ion battery. It includes an FM radio tuner. This model represented the highest-capacity flash variant in the initial A Series generation derived from the NW-E500 line. The highest-capacity model of the first flash A Series and the strongest version of that early premium formula. It showed Sony beginning to treat the A Series as a serious destination line instead of a side experiment. The A608 felt more deliberately positioned as a higher-end object, with more emphasis on refinement and status than on novelty or playfulness.
NW-A1000
The NW-A1000 is part of the first-generation A Series HDD family. It provides 6GB hard-disk storage and supports MP3, ATRAC, WMA, and AAC playback on an OLED display. A lithium-ion battery delivers up to 20 hours of use, with features including Artist Link and Intelligent Shuffle. Released after Sony dropped the Network Walkman name, it unified Sony's previous HDD and flash premium branches under the new A Series identity. This player was the player where Sony started consolidating what its premium digital Walkman was supposed to be. By this point Sony was moving away from the "Network Walkman" label and trying to pull its higher-end digital audio hardware into something more coherent. The A Series became the place where that happened. It pulls together the premium storage-driven ambition of the HDD line and the more design-conscious, lifestyle-facing direction Sony had been inching toward. The result is less of a niche technical device and more like Sony trying to define what its flagship portable audio hardware should look like going forward.
NW-A1200
The NW-A1200 is a Sony Style limited edition in the first-generation A Series HDD family. It features 8GB hard-disk storage and supports MP3, ATRAC, WMA, and AAC playback on an OLED display. A lithium-ion battery provides up to 35 hours of use, with Artist Link and Intelligent Shuffle included. Released after Sony dropped the Network Walkman name, it unified Sony's previous HDD and flash premium branches under the new A Series identity. A limited-edition branch of the first hard-disk A Series. It kept the same basic A1000-era identity , hard-disk storage, elevated design, and a more lifestyle-flagship tone , but pushed capacity and exclusivity instead of changing the concept itself. It shows Sony experimenting with how premium digital Walkman should be packaged and tiered during the mid-2000s.
NW-A3000
The NW-A3000 is a Walkman part of the first-generation A-series, equipped with a large-capacity hard drive. It has a 20GB internal hard drive and supports audio playback in MP3, ATRAC, WMA, and AAC formats. It features an OLED display, supports operation with a lithium-ion battery, and includes Artist Link and Intelligent Shuffle functions. Its self-contained configuration with an internal hard drive allows for the portability of a large music library.
In 2005, an integrated digital music system was established. At the same time, the limitations in comparing our products with those of other companies became clear.

