FEATURES:
Compatible Music Files : MP3 1
: WMA 2 
Memory Capacity : 256MB 3 
Will Not Skip : No Moving Parts 
LCD Display : Easy-to-read 4-line Display 
Power Source : 1-AAA Alkaline Battery (not included) 
Headphone Jack : Yes 
Playback Time 4 : Up to 9 Hours (on 1 AAA Battery) 
SHOCKWAVE® Tough Body Design : Yes 
Water Resistant 5 : Yes 
Built-in Digital Synthesizer FM Tuner : Yes 
Built-in Microphone : No 
Memory Presets : 20 Stations 
Drag-and-Drop File Transfer : Yes 
6-Preset EQ Mode : Yes 
ID3 Tagging : Yes 
Playlist Selection : Yes 
A-B Repeat : Yes 
Color : Blue 
Included Accessories : USB Cable
: Arm Band
: Headphones 
Dimensions (H x W x D) : 21/8'' x 33/16'' x 07/8''
Weight : .13 lbs

Footnotes
1 MP3 audio decoding technology licensed from Fraunhofer IIS and Thomson multimedia. For contents recorded on CD-R/RW media from CDs for your personal use. Playability may vary depending on contents and discs. 
2 This is a compression format developed by Microsoft Corporation. It achieves the same sound quality as MP3 with a file size that is smaller than that of MP3. 
3 MB means one million bytes. Usable capacity will be less. 
4 Battery operated playing time may be shorter depending on conditions of use. 
5 Not to be immersed in or come in continuous contact with water