"comfortable, accurate, smooth, excellent key response"4.0 starson by ljboss
Pros: Very easy setup, outstanding battery life (if you believe Logitech, which I ususally do). New improved keyboard tilt leg structures. logical function keys preprogrammed. Mouse is terrific.
Cons: Silly battery level guage.
Summary: Best keyboard and mouse I have ever used on PC's since 1985, with a few Macs along the way.