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- Waterproof (salt water) for worry-free use
- Works in temperatures from 23°F to 113°F
- Easy Bluetooth® connectivity with NFC™ One-touch
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- Remote control and Bluetooth® cannot function underwater
- Must be washed after every use in pool water or seawater
- IPX5/8
- MP3 (128 kbps) Ambient Sound mode off
- Remote only available with 16 GB mode
- About 10% smaller than WS410 series
© 2016 Sony Electronics Inc. All rights reserved. Reproduction in whole or in part without written permission is prohibited. Sony and the Sony logo are trademarks of Sony Corporation. All other trademarks are trademarks of their respective owners. Features and specifications subject to change without notice.
Can I use the NW-WS623 Walkman for swimming, including in salt water?
Yes. The NW-WS623 is waterproof to IP65/IP68 specifications and can be submerged up to 2 meters for up to 30 minutes in both fresh and salt water when used with the supplied swimming earbuds. Be sure to rinse it after every use in pool water or seawater to maintain performance.
Does Bluetooth work underwater with the NW-WS623?
No. Bluetooth and the remote control cannot function underwater, so you'll need to use the built-in music storage while swimming. Reserve Bluetooth streaming for use on land or at the surface.
How much music can the NW-WS623 store, and what formats does it support?
The NW-WS623 has 4 GB of built-in flash memory for music storage. It supports common audio formats including MP3, WMA, Linear PCM, and AAC-LC.
What is the battery life and charging time for the NW-WS623?
Battery life is up to 12 hours for MP3 playback (128 kbps, Ambient Sound mode off) and around 4 hours over Bluetooth. A quick 3-minute charge provides about 60 minutes of playback, and a full charge takes roughly 1.5 hours.
Is the NW-WS623 suitable for outdoor sports in extreme temperatures?
Yes. It is designed to work in temperatures from 23°F to 113°F, making it suitable for a wide range of outdoor sports conditions, from cold to hot environments.
Can I take phone calls with the NW-WS623 when connected via Bluetooth?
Yes. When paired with a compatible smartphone, the NW-WS623's built-in microphone allows hands-free calling in addition to wireless music playback.
What is Ambient Sound Mode on the NW-WS623 and when should I use it?
Ambient Sound Mode uses built-in microphones to mix in outside sound so you can hear your surroundings while listening to music. It's useful for running, cycling, or gym workouts where situational awareness is important.
How do I pair the NW-WS623 with my phone?
The NW-WS623 offers easy Bluetooth connectivity with NFC one-touch pairing. Simply touch the headset to an NFC-enabled smartphone to pair quickly, or connect manually through Bluetooth settings.
How much does the Sony NW-WS623 Walkman cost?
MSRP is listed as $149.99. Given that, these models can go on sale from time to time, and there are several other opportunities to save on price like through their group discounts for education, healthcare and military/veterans (ID.me & Unidays) along with their free loyalty program that gives up to 5% back in points.
*FAQ generated on 07/23/2026. Financing, pricing and promotions may no longer apply.