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

Flash memory form factor
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Product name	Sony Walkman NWZ-A729 (16GB, black) Close	Sony NWZ-S738F Walkman (8GB, black) Close	Sony Walkman NWZ-A829 (16GB, black) Close	Creative Zen (16GB) Close	Microsoft Zune 120GB (third generation, glossy black) Close
Price	$204 to $299 at 4 stores	$149 to $186 at 4 stores	$278 to $297 at 3 stores	$139 to $319 at 14 stores	$224 to $282 at 13 stores
CNET editors' rating	4.0 stars Excellent	4.0 stars Excellent	4.0 stars Excellent	4.0 stars Excellent	4.0 stars Excellent
Average user rating	4.5 stars out of 2 reviews	4.0 stars out of 6 reviews	4.5 stars out of 9 reviews	3.5 stars out of 88 reviews	4.0 stars out of 57 reviews
Release date	March 28, 2008	September 15, 2008	March 28, 2008	August 28, 2007	September 16, 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.	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 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.	We're hard-pressed to find anything not to like about the Creative Zen. It's a great option for anyone looking for a great-sounding, pocketable MP3 player with an excellent, video-capable screen and plenty of extra features.	The Zune 120, with a unique focus on music discovery, is a fierce competitor to the iPod Classic. The Zune's substantial storage capacity combined with its Zune Pass music subscription makes it an ideal solution for restless music fans with large appetites.
Basic specs
Features	See What's the Same or What's different
Battery technology	Info unavailable	Lithium ion	Info unavailable	Lithium ion	Lithium ion
Digital player (recorder)	WMA Protected WMA (DRM) PCM MP3 AAC	WMA WAV Protected WMA (DRM) MP3 AAC	WMA Protected WMA (DRM) PCM MP3 AAC	WMA WAV ADPCM Audible MP3 AAC	WMA WMAPro Audible MP3 AAC
Software type	Info unavailable	Info unavailable	Info unavailable	Creative ZENcast Organizer Creative Media Explorer Drivers & Utilities	Info unavailable
Dimensions (WxDxH)	2 in x 0.4 in x 3.7 in	1.7 in x 0.3 in x 3.5 in	2 in x 0.4 in x 3.7 in	3.3 in x 0.4 in x 2.2 in	2.4 in x 0.5 in x 4.3 in
Color	Black	Black	Black	Black	Black
PC interface(s) supported	Hi-Speed USB	USB	Hi-Speed USB Bluetooth	Hi-Speed USB	Hi-Speed USB Wi-Fi
Mfr estimated battery life	36 hour(s)	Info unavailable	36 hour(s)	Info unavailable	30 hour(s)