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| Price | Check Prices | Check Prices | $281.97 to $383.99 | Check Prices | $72.20 to $74.98 |
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| Release date | July 01, 2009 | September 15, 2008 | |||
| The Bottom Line | 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. | 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. | 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. | Thanks to excellent sound quality, integrated noise-canceling functionality, and several smart music sorting options, the Sony S-Series Walkman is a superb choice for music aficionados. | The second-generation Sony E-Series Walkman remains an excellent value thanks to its ultralow pricing, pocketable design, handy features, and great sound quality. |
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| Features | |||||
| Dimensions (WxDxH) | 1.7 in x 0.4 in x 3.5 in | 1.7 in x 0.4 in x 3.5 in | 2.1 in x 0.4 in x 3.9 in | 1.7 in x 0.3 in x 3.5 in | 1.7 in x 0.4 in x 3.5 in |
| Software type | Drivers & Utilities Microsoft Windows Media Player 11 | Drivers & Utilities Microsoft Windows Media Player 11 | Microsoft Windows Media Player 11 | Info unavailable | Drivers & Utilities |
| Resolution | 240 x 320 | 240 x 320 | 432 x 240 | 240 x 320 | 240 x 320 |
| Mfr estimated battery life | 33 hour(s) | 33 hour(s) | 33 hour(s) 9 hour(s) | Info unavailable | 30 hour(s) |
| PC interface(s) supported | Hi-Speed USB | Hi-Speed USB | USB Wi-Fi | USB | USB |
| Flash memory form factor | Integrated | Integrated | Integrated | Integrated | Integrated |
| Flash memory installed | 8 GB | 8 GB | 16 GB | 8 GB | 8 GB |
| Battery technology | Lithium ion | Lithium ion | Lithium ion | Lithium ion | Lithium ion |
| Weight | 1.9 oz | 1.9 oz | 3.5 oz | 1.6 oz | 1.9 oz |
| Full specifications | Full specifications | Full specifications | Full specifications | Full specifications | Full specifications |
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