Full Specifications and Features



1.02 oz
Battery Life - Continuous Playback Music
8 hours
Charging Time (full charge)
1.5 hours
Charging Time (Quick Charge)
3 minutes (60 minutes of use)
Memory Size
4 GB
USB Connection
Input and Output Terminals
Hi-Speed USB (USB 2.0)
Music Play Mode
Drag and Drop
Linear PCM
PC External Storage Device
Sound Effects
Audio Playback
AAC (Non-DRM), Linear PCM, MP3, WMA (Non-DRM)
System Requirements
Mac OS® X (v10.6 or later), Microsoft Windows® 8, Windows Vista® (SP2 or later), Windows® 7 (SP1 or later), Windows® XP5 (SP3 or later)
  • Quick Start Guide
  • USB Cradle
  • Standard-type earbuds
  • Swimming earbuds
  • Adjustment band


Wire-free & Waterproof

The W Series Sports Walkman’s unique design is lightweight, streamlined, and ideal for sports and active lifestyles. It allows you to be wire-free and without distraction whether you’re working out at the gym, playing outdoors or even swimming. Waterproof down to 6.6 feet.

Drag, drop and go

With a Walkman® player, you are never tied to just one music service. Just drag and drop MP3s from iTunes®, Windows® Media Player or Internet Explorer® and enjoy. Multi-format playback also lets you play WMA, AAC or L-PCM music files. 8 GB capacity powers extended workouts.

Playlist compatible

Create your favorite playlists in iTunes® or Windows Media Player and drag them to the NWZ-W273 player. Use shuffle mode and mix it up to help keep your workouts fresh.

Easy listening

The replaceable earbuds plus adjustment strap enable a personalized fit. And the new NWZ-W274S has special swimming earbuds with higher water resistance for more comfortable listening under water. Note: the swimming earbuds prevent water penetration inside the headphones; due to their special design, the sound may be softer—simply adjust volume as needed.

Quick charge, 8-hour battery

Running out the door? Charge the W Series Sports Walkman for just 3 minutes and get a full 60 minutes of use. With an impressive total battery life of up to 8 hours on a full charge and ready to go.

Playlist at your fingertips

Change songs without breaking your concentration. Searching through your music is simple with the multi-function playback buttons. A quick tap changes songs and a tap and hold changes folders while in all-play mode. In playlist mode a quick tap changes songs and a tap and hold changes the playlist.

Music to match your pace

Find the perfect music for the moment using the ZAPPIN® search feature, allowing you to easily navigate through your song collection by playing back signature parts of the songs.

Waterproof to 6.6 ft

The NWZ-W273 series is waterproof down to 6.6 feet. That means it doesn’t just survive a few water splashes--you can swim with it. Perfect for laps in the pool and much more. Not for use in salt water.

Big sound, small size

0.53 in drivers deliver deep bass and dynamic audio reproduction without the bulk of standard headphones, so you’ll almost forget you’re wearing them.