Scope ok, even in a large living room (> 7m) Advantage = multitouch pad with lots of functions (zoom, scroll, change app, show desktop). Full pointer Management Software (speed, more accuracy than the full Windows setup). Disadvantage = very heavy! not suitable for use on the couch, it will remain on the coffee table.
Fragile = a touch jumped after 3 days ... too bad. No backlight. The K830 model will be better to start the evening movie.
