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Sony Walkman NWZ-A729 (16GB, black) comparison

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Product name	Sony Walkman NWZ-A729 (16GB, black)	Sony X-Series Walkman (16GB)	Sony Walkman NWZ-A829 (16GB, black)	Sony E-Series Walkman (second generation, 16GB, black)	Sony S-Series Walkman (second generation, 16GB, black)
Price	Check Prices	$281.97 to $383.99	Check Prices	$89.00 to $119.99	$118.73 to $155.21
CNET editors' rating	4.0 stars Overall score: 8.0 (4.0 stars)	4.0 stars Overall score: 8.7 (4.0 stars)	4.0 stars Overall score: 8.0 (4.0 stars)	3.5 stars Overall score: 7.0 (3.5 stars)	3.5 stars Overall score: 7.0 (3.5 stars)
Average user rating	5.0 stars	4.0 stars	4.5 stars		3.5 stars
Release date	March 28, 2008	July 01, 2009	March 28, 2008
The Bottom Line	The Sony NWZ-A720 is the best-sounding, best-looking Walkman series yet, and the inclusion of premium earphones adds real value.	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-A820 is the best sounding, best-looking Walkman series yet, and the inclusion of Bluetooth audio makes it a top choice for cable-hating audio enthusiasts.	The second-generation Sony E-Series Walkman remains an excellent value thanks to its ultralow pricing, pocketable design, handy features, and great sound quality.	The Sony S-Series Walkman is a solid entry-level MP3 player thanks to its ultra-affordable price tag, easy-to-use design, excellent performance, and fair smattering of features--but those who are looking to upgrade from the previous generation will not be impressed.
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Dimensions (WxDxH)	2 in x 0.4 in x 3.7 in	2.1 in x 0.4 in x 3.9 in	2 in x 0.4 in x 3.7 in	1.7 in x 0.4 in x 3.5 in	2 in x 0.4 in x 4 in
Software type	Info unavailable	Microsoft Windows Media Player 11	Info unavailable	Drivers & Utilities	Drivers & Utilities
Resolution	240 x 320	432 x 240	240 x 320	240 x 320	240 x 320
Mfr estimated battery life	36 hour(s)	33 hour(s) 9 hour(s)	36 hour(s)	30 hour(s)	42 hour(s)
PC interface(s) supported	Hi-Speed USB	USB Wi-Fi	Bluetooth Hi-Speed USB	USB	USB
Flash memory form factor	Integrated	Integrated	Integrated	Integrated	Integrated
Flash memory installed	16 GB	16 GB	8 GB	16 GB	16 GB
Battery technology	Info unavailable	Lithium ion	Info unavailable	Lithium ion	Lithium ion
Weight	2 oz	3.5 oz	2 oz	1.9 oz	0.2 lbs
Full specifications	Full specifications	Full specifications	Full specifications	Full specifications	Full specifications
Buying choices	E-mail me when this product is available	Buy direct from Sony Electronics, Inc. $299.95 In stock: Yes Amazon.com $284.77 In stock: Yes Crutchfield $299.99 In stock: Yes Prices from 4 authorized stores	E-mail me when this product is available	Amazon.com $93.81 In stock: Yes PC Connection $119.37 In stock: Yes Abt Electronics $119.99 In stock: Yes Prices from 3 authorized stores	J&R Music and Computer World $129.88 In stock: Yes Amazon.com $118.73 In stock: Yes PC Connection $155.21 In stock: Yes Prices from 3 authorized stores
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