Sony’s Walkman range continues to distance itself from the yellow bricks of old. Their tough metal S-series players are built for sports, being water resistant and running flash memory to survive jolts unscathed. Featuring G-sensor technology, it monitors speed, tempo and acceleration, and can even find a playlist to match the pace of your workout. It takes just three minutes to notch up three hours of playback, and you get a total of 18 hours of battery life on a full charge. The biggest novelty of all is the Shuffle Shake function, which lets you switch from a playlist to shuffle by shaking the player.


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