Size and weight

Height:

1.07 inches (27.3 mm)

Width:

1.62 inches (41.2 mm)

Depth:

0.41 inch (10.5 mm) including clip

Capacity

• 1GB or 2GB flash drive²


• Holds up to 240 or 500 songs in 128-Kbps AAC format³


• Stores data via USB flash drive

Battery and power⁴

• 
  
  
  
  • Built-in rechargeable lithium polymer battery
  
  
  • Playtime: Up to 12 hours when fully charged
  
  
  • Charging via included USB dock
    
    
    
    • Full-charge time: about 4 hours
    
    
    
    
  
  
  
  

http://www.apple.com/ipodshuffle/specs.html is a website link you can go to for more information.