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| Price | $399.99 | Check Prices | Check Prices | $254.86 to $383.99 | Check Prices |
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| Release date | January 07, 2005 | July 01, 2005 | July 01, 2009 | ||
| The Bottom Line | Sony's 20GB HD1 looks, sounds, and feels amazing, but you'll have to sacrifice an extra wad of cash, not to mention native MP3 and WMA file support. | Sony's 20GB HD3 may not have the HD1's looks and battery life, but its native MP3 support and flashy new colors make it a better choice overall. | If you want a slick alternative to the iPod and you're into Sony's Connect music store, then the NW-HD5 is a stellar choice. | The X-Series is a superb choice for audiophiles who want a luxury device with an excellent touch-screen interface and plenty of other bells and whistles. | The Sony NWZ-A810 offers a fantastic display, a sleek design and interface, and a stellar battery life--plus, it's one of the few MP3 players that sound great right out of the box. Users looking for the whole package (sans radio) will be pleased. |
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| Features | |||||
| Dimensions (WxDxH) | 3.5 in x 0.6 in x 2.4 in | 3.5 in x 0.6 in x 2.4 in | 3.5 in x 0.6 in x 2.2 in | 2.1 in x 0.4 in x 3.9 in | 1.7 in x 0.4 in x 3.5 in |
| Resolution | Info unavailable | Info unavailable | Info unavailable | 432 x 240 | 240 x 320 |
| Software type | Sony SonicStage | Sony SonicStage | Info unavailable | Microsoft Windows Media Player 11 | Drivers & Utilities Microsoft Windows Media Player 11 |
| Mfr estimated battery life | 30 hour(s) | 30 hour(s) | 40 hour(s) | 33 hour(s) 9 hour(s) | 33 hour(s) |
| PC interface(s) supported | USB | USB | Hi-Speed USB | USB Wi-Fi | Hi-Speed USB |
| Flash memory form factor | Info unavailable | Info unavailable | Info unavailable | Integrated | Integrated |
| Flash memory installed | Info unavailable | No built-in memory | Info unavailable | 16 GB | 8 GB |
| Battery technology | Lithium ion | Lithium ion | Lithium ion | Lithium ion | Lithium ion |
| Weight | 3.9 oz | 4.6 oz | 4.8 oz | 3.5 oz | 1.9 oz |
| Digital storage media capacity | 20 GB | 20 GB | 20 GB | Info unavailable | Info unavailable |
| Full specifications | Full specifications | Full specifications | Full specifications | Full specifications | Full specifications |
| Buying choices |
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