specification:

• System requirements：Windows95/98/2000/ME/XP/VISTA
  
• Key layout:104/105/106/107/109 Keys
  
• Full travel:3.0±0.3mm
  
• Peak travel: 0.25±0.2mm
  
• Button force: 60±7g
  
• Keystrokes life: over 8,000,000 times keys life
  
• Size：469.4(L)×197.3 (W)× 26(H)mm

Features:

• Laser-carved characters，ultra wear-resisting
  
• all water-proof design
  
• Round shape，fashionable design
  
• Install anti-striking protection pillar where the keys are often used when playing games
  
• 2.4GHz radio frequency technology