Waterproof even in salt water Waterproof and Dustproof to IP65/IP68 specifications, the NW-WS410 Walkman will maintain operability when submerged in water to a depth of 2m for up to 30 minutes - even in salt water. The swimming earbuds must be used for the waterproof design to function correctly. Please note, after usage in salt water always wash your Walkman according to the supplied instructions. Made for extreme temperatures from -5℃ to 45℃ Work out in the height of summer or the depths of winter. The NW-WS410 can handle almost any weather conditions and temperatures from -5℃ to 45℃. Ambient Sound Mode Ambient Sound Mode uses the microphones built into the left and right side of the Walkman to allow you to hear the ambient sounds around you, even as you listen to music. So, you can listen to your fitness instructor or talk to your friends without missing a beat. Protects against dust and sand From beaches to dusty mountain trails, there’s no need to worry about dirt or small particles entering the NW-WS410. It’s waterproof and dustproof to IP65/IP68 specifications, giving you complete confidence in your Walkman’s performance. All-in-one design for wire-free workouts This Walkman® is built into a headset with an all-in-one design that lets you focus on your workout rather than a tangle of wires. Bring all your music with 4GB or 8GB of storage Before you hit the courts or the pool, preload your favourite tracks, albums, and workout playlists onto a built-in Walkman. With 4GB & 8GB versions available (storage capacity varies depending on region) you’ll never be short of tunes, even when powering through the longest workout. Take charge in the water with built-in controls When you’re in the pool racking up the laps, you can shuffle tracks, turn up the volume and easily switch between playlists with built-in controls in your Walkman headset. Wrap-around headband for free movement Enjoy the freedom to move with a secure wrap-around headset. Designed to fit comfortably to your head, this lightweight headset stays in place, so you can run, jump, and train harder. Quick charge, 12-hour battery Running out the door to workout? Charge the NW-WS410 Walkman for just 3 minutes and get a full 60 minutes of use. With an impressive total battery life of up to 12 hours2 on a full charge and ready to go. Drag, drop all your files 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-LC, or L-PCM music files. Standard and waterproof earbuds for versatile listening Get the best sound for your workout with a choice of standard or waterproof earbuds. Standard earbuds give you a comfortable fit and balanced sound. Hitting the pool? Switch to the waterproof earbuds; a thin film covers each earbud, preventing water damage within the Walkman and optimising sound levels for underwater listening.