Ive owned the keyboard model before this one for many years and this model for at least a year before I bought this second one for my Dad. For the price its great, and the past models of Logitech products have lasted me many years and lots of use. This keyboard is big enought to type on , but not so big that you wont mind carying it. And little weight. The range works fine in the same room, and can even go into an adjacent room close to a doorway and it still works.
This may be the best keyboard I've ever had. Love the backlighting and all the helpful functions. Most of all, it's quiet and well laid-out. Just really comfortable to use. It definitely helps me type faster and with greater accuracy.
It's wired, no Bluetooth latency. It's backlit- so I can see what I'm typing in the dark. Good sturdy material. Easy to clean.