Friday, July 02, 2004

One of the features that supposedly distinguishes Sony's new Walkman from the iPod is battery life: 30 hours for the Sony versus eight for the iPod. But Wes Felter points out the numbers game Sony is playing to get there:

Dell has been advertising "twice the battery life of iPod" on the radio lately, but the fast talk at the end of the commercial says they assume 64kbps files. Most people probably have 128kbps files on their iPods, so the Dell DJ probably accesses the hard disk half as often -- voila, twice the battery life. And if you use 48kbps audio, like Sony does, then you get three times the iPod's battery life -- around 30 hours. When everybody's using the same parts, the only way to get a 2x or 3x advantage is to cheat.

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