Iterative updates brought improved battery life and interface polish without diluting the audio-first philosophy. Design language matured further, signaling quiet confidence in the category’s specialist role.
NW-WS623
The NW-WS623 is a W Series Network Walkman with 4 GB storage supporting MP3, AAC, and WMA playback. A lithium-ion battery delivers up to 8 hours of use with Bluetooth. This unit kept the wearable W Series focus with added wireless capability. The WS623 is part of the next mature phase of Sony's sport Walkman branch, where the line had already proven its reason for existing and was now being refined as a durable, specialized platform. Sony was making the branch more livable, more flexible, and more believable as a long-term product family.
NW-WS625
The NW-WS625 is a W Series Network Walkman offering 16 GB storage for MP3, AAC, WMA, and FLAC playback. A lithium-ion battery provides up to 8 hours with Bluetooth. The higher-capacity variant extended the wearable line into higher-resolution support. The WS625 gives that same mature sport Walkman idea its fullest version. It still carries the same activity-first, body-integrated listening philosophy, but here the concept feels fully rounded and very comfortable in its own niche.
NW-S313
The NW-S313 is a thirteenth-generation S Series Network Walkman with 4 GB storage supporting MP3, WMA, AAC, and WAV playback. A lithium-ion battery supplied up to 77 hours of use with photo playback and Clear Phase. The modern S line shifted closer to the old E Series role and simplicity, dropping video playback. The S313 is part of the very late simplified S phase, where the line had effectively become one of Sony's last modest, low-friction, compact Walkman branches. Sony was no longer trying to keep every old branch alive in its previous form. It was consolidating.
NW-S313K
The NW-S313K is a thirteenth-generation S Series model with 4 GB storage supporting MP3, WMA, AAC, and WAV files. It uses a 77-hour lithium-ion battery with speaker output, photo playback, and Clear Phase. The speaker K variant retained the simplified thirteenth-generation positioning. It is the same late simplified S platform with speaker packaging added on top. The underlying role of the player is a late Walkman branch that exists because there is still a quiet use case for a compact, low-maintenance music device.
NW-S315
The NW-S315 is a thirteenth-generation S Series Network Walkman offering 16 GB storage for MP3, WMA, AAC, and WAV files. It uses a 77-hour lithium-ion battery with photo playback and Clear Phase. The modern S line shifted closer to the old E Series role and simplicity, dropping video playback. The S315 is probably the most naturally balanced version of that late simplified S family. It still carries the same low-friction, modest, playback-first appeal as the surrounding models, but with enough room to make the branch feel less transitional and more fully usable as an everyday dedicated player.
NW-S315K
The NW-S315K is a thirteenth-generation S Series model with 16 GB storage supporting MP3, WMA, AAC, and WAV files. It uses a 77-hour lithium-ion battery with speaker output, photo playback, and Clear Phase. The speaker K version completed the thirteenth-generation S range. It keeps that same late simplified S platform and extends it into a more casual-use presentation.
NW-ZX300
The NW-ZX300 is the model that gave the ZX Series its clearest long-term identity. After the earlier Android experiments, Sony brought the line back to a dedicated proprietary operating system and re-centered it around serious music playback. It paired 64 GB of internal storage with microSD expansion, Bluetooth, NFC, USB DAC capability, direct USB transfer, WM-PORT, 4.4 mm balanced output, and broad support for high-resolution formats including DSD, APE, and MQA. The ZX300 was the point when the ZX line stopped feeling experimental and started feeling fully defined as a portable audiophile branch within the modern Walkman range. It felt much closer to a compact expression of Sony's flagship Walkman thinking than to a smartphone-like media player.
NW-ZX300G
The NW-ZX300G is the higher-capacity version of the ZX300 instead of a separate new generation. It kept the same playback-focused design, proprietary operating system, 3.1-inch touchscreen, Bluetooth, NFC, USB DAC support, direct USB transfer, WM-PORT, microSD expansion, and 4.4 mm balanced output, but increased internal storage from 64 GB to 128 GB. This model reinforced Sony's compact playback-focused premium Walkman formula by offering more onboard capacity in the same chassis. The ZX300G strengthened the already well-defined ZX300 concept without changing its direction.
NW-A45
The NW-A45 is an A Series Network Walkman with 16 GB storage supporting APE and MQA playback along with MP3, WMA, AAC, FLAC, ALAC, AIFF, and Linear PCM. A lithium-ion battery delivers up to 45 hours of use with digital noise cancellation and S-Master HX. It continued the 11th-generation A Series high-resolution focus. The A45 is part of the phase where the A Series had become Sony's most dependable compact premium Walkman line. By this point the branch felt extremely sure of itself: compact, high-resolution-capable, long-running, and clearly aimed at listeners who wanted something more serious than the entry-level models without stepping up into ZX territory. What matters here is not reinvention but polish. The A45 reflects Sony refining the dedicated non-Android A formula into something very stable and very hard to misunderstand.
NW-A45HN
The NW-A45HN is an A Series model with 16 GB storage supporting APE and MQA playback along with MP3, WMA, AAC, FLAC, ALAC, AIFF, and Linear PCM. It uses a 45-hour lithium-ion battery with digital noise cancellation, S-Master HX, and bundled earphones. The HN variant added earphones to the core 11th-generation platform. It is best understood as a packaging branch of the same compact high-resolution A line. The player's real importance stays the same: this is Sony's modern, listening-first Walkman operating from a place of clarity instead of confusion.
NW-A46HN
The NW-A46HN is an A Series Walkman offering 32 GB storage for APE and MQA playback along with MP3, WMA, AAC, FLAC, ALAC, AIFF, and Linear PCM. It uses a 45-hour lithium-ion battery with digital noise cancellation, S-Master HX, and bundled earphones. The A46HN extended that same mature A platform upward in storage while keeping its role as the compact serious-listener Walkman below the ZX line. The significance remains the same: not radical, just very resolved. This is the kind of model that only appears once a line has stabilized.
NW-A47
The NW-A47 is an A Series Network Walkman with 64 GB storage supporting APE and MQA playback along with MP3, WMA, AAC, FLAC, ALAC, AIFF, and Linear PCM. A lithium-ion battery provides up to 45 hours of use with Bluetooth, digital noise cancellation, and S-Master HX. Earphones were bundled. The flagship 64 GB variant completed the 11th-generation A Series with full wireless capability. The A47 is the fullest-storage version of the same A40 family and the strongest version of the non-Android compact Hi-Res A formula. At this point the line felt disciplined: compact body, long battery life, strong audio focus, and just enough wireless flexibility to feel current without becoming phone-like.
2017 saw Sony evolve the Walkman incrementally rather than chasing trends. It kept the lineup relevant for listeners who still preferred dedicated hardware.