EverythingUSB reviews the Sony NW-E75 Walkman.
"Sony NW-E75 Network Walkman, like the NW-MS70D, is clad in a titanium sliver and bears a minimalist design. The 256MB flash memory player measures at just 2 by 1.5 by 0.75", and weighs at 2 oz.
At such size, only the Samsung Yepp YP-T5V is more diminutive than the Sony's. The new NW-E75 certainly qualifies as a minuscule music player. Unfortunately, Sony did little to improve the usability and compatibility for this generation of Network Walkman."
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