specification:
System requirements：Windows95/98/2000/ME/XP/VISTA
Key layout: 19Keys
Full travel:3.0±0.3mm
Peak travel: 0.25±0.2mm
Button force: 57±7g
Keystrokes life: over 8,000,000 times keys life
Size：100(L)×149(W)×70(H)mm
Weight：175g

Features:
19 keys designed,facilitate simple
Waterproof design
Removable cover
Thin Caps，Gentle touch，Quiet comfort