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| Price | $39.49 | $39.99 to $50.18 | $40.69 to $49.99 | $41.99 | $49.88 to $54.99 |
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| Release date | September 15, 2008 | May 11, 2009 | September 01, 2009 | September 15, 2008 | March 30, 2009 |
| The Bottom Line | The entry-level Sony B-Series Walkman is a solid choice for the gym thanks to its ultracompact design, quick charge function, and integrated FM tuner--but beware the eye strain. | If you're looking for a small, practical MP3 player to throw in your gym bag, the Samsung U5 is a great option that won't break the bank. | The SanDisk Sansa Clip+ is an excellent successor to the line, offering a fitness-friendly design with a built-in belt-clip, a simple interface, solid sound quality, and plenty of handy features--all for an ultralow price. It's an unbeatable value. | The entry-level Sony B-Series Walkman is a solid choice for the gym thanks to its ultracompact design, quick charge function, and integrated FM tuner--but beware the eye strain. | The Sony W-Series Walkman is a great option for active users who want an all-in-one music device to use while working out. |
| Similar Products | Compare more products | Compare more products | Compare more products | Compare more products | Compare more products |
| Features | |||||
| Weight | Info unavailable | Info unavailable | 0.8 oz | Info unavailable | 1.3 oz |
| Software type | Info unavailable | Info unavailable | Drivers & Utilities | Info unavailable | Info unavailable |
| Battery technology | Lithium ion | Info unavailable | Info unavailable | Lithium ion | Lithium ion |
| PC interface(s) supported | Hi-Speed USB | Info unavailable | Hi-Speed USB | Hi-Speed USB | USB |
| Mfr estimated battery life | 16 hour(s) | Info unavailable | 15 hour(s) | 16 hour(s) | 12 hour(s) |
| Flash memory installed | 2 GB | Info unavailable | 4 GB | 2 GB | 2 GB |
| Flash memory form factor | Integrated | Info unavailable | Integrated | Integrated | Integrated |
| Dimensions (WxDxH) | 3.5 in x 0.6 in x 1 in | Info unavailable | 1.4 in x 0.6 in x 2.2 in | 3.5 in x 0.6 in x 1 in | 7.4 in |
| Full specifications | Full specifications | Full specifications | Full specifications | Full specifications | Full specifications |
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Sony NWZ-B135F Walkman (2GB, black) comparison
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