Pros: Solar powered: It never runs out of battery! I've never seen the batter drop below 99%... hasn't even gotten close to draining even in a dimly lit room. I work at night mostly and usually with almost no light other than my computer monitor. Logitech Quality: aka I've never had a problem it works flawlessly consistently.

Cons: it's not ergonomic (just your standard keyboard shape we're all used to), and is susceptible to spillage (although I have not tested it)

Overall Review: This is the keyboard to rule all keyboards!