Sony

Sony NW-WS623 Waterproof Walkman MP3 Player Bluetooth Black

3.9 (830 reviews)

Swim, run, and train with music — the Sony NW-WS623 is a waterproof, wireless Walkman built for active lifestyles.

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Overview

The Sony NW-WS623 Waterproof Walkman is purpose-built for athletes, swimmers, and anyone whose workouts take them where a smartphone simply can't go. With IPX5/8 waterproof certification and IP6X dust-proofing, this player handles pool sessions, beach runs, and muddy trail workouts without missing a beat. Its 4GB of built-in storage lets you load your playlist directly onto the device, so you can leave your phone in the locker. Bluetooth connectivity is also on board for streaming from your phone during dry-land activities like gym sessions or commutes.

Battery life is a standout feature at 12 hours on a full charge, comfortably covering even the longest training days. The quick-charge function is particularly practical — just 3 minutes of charging delivers about an hour of playback, ideal for those moments when you forgot to charge the night before. The wraparound design keeps the player secure during vigorous movement, and the operating temperature range of -5 to 45 degrees Celsius means it handles early-morning cold-water swims and summer runs alike. For anyone who needs a dedicated, rugged music player that goes wherever their training takes them, the NW-WS623 delivers.

Specifications

Brand
Sony
Model
NW-WS623
Storage Capacity
4 GB
Waterproof Rating
IPX5/8
Dustproof Rating
IP6X
Bluetooth
Yes
Battery Life
Up to 12 hours
Quick Charge
3 minutes for 1 hour playback
Operating Temperature
-5°C to 45°C
Water Submersion
Up to 2 meters for 30 minutes
Color
Black

Pros & Cons

👍 Pros

  • IPX5/8 waterproof rating allows genuine underwater use up to 2 meters for 30 minutes
  • 12-hour battery life with a useful 3-minute quick charge feature for last-minute top-ups
  • Built-in 4GB storage means no phone required during workouts or swims
  • IP6X dust-proof rating protects against sand and fine debris during outdoor activities
  • Operates in temperatures from -5 to 45 degrees Celsius, handling cold water and hot weather

👎 Cons

  • 4GB internal storage is limited and cannot be expanded with a memory card
  • Bluetooth streaming is unavailable while the player is submerged in water
  • The behind-the-neck wraparound design may not fit comfortably under all swim cap styles
  • No display screen, so managing playlists and track selection is done entirely by feel with physical buttons

Frequently Asked Questions

Yes, the NW-WS623 is rated IPX5/8 waterproof and can be submerged up to 2 meters for 30 minutes, making it suitable for swimming in pools and open water.
The 4GB storage holds approximately 900 songs in standard MP3 format (128kbps), so you can load a solid playlist without needing a phone or external device.
No, Bluetooth signals do not transmit well through water. While swimming, you'll need to use music stored on the player's built-in 4GB memory. Bluetooth streaming works normally during land-based activities.
The NW-WS623 provides up to 12 hours of playback on a full charge, and a 3-minute quick charge gives you approximately 1 hour of listening time.