Product details:

• Built-in flash, capacity range:128/256/512/1GB/2GB
  
  
• System requirements: WINDOWS 98 SE or higher
  
  
• Portable date storage and exchange, can be written and erased 1,000,000 times
  
  
• One red laser pointer indicator & ballpoint pen function
  
  
• Unit size: 145mm*15.8mm,
  
  
• battery :2*CR1220
  
  
• Unit size:17*145mm
  
  
• Output power:class11<1mW,class111<5mW
  
  
• wavelength:650nm
  
  
• material:metal