Smooth, chick and absolutely reliable in the radio link. If you (like me) has rumgehackt daily since 1998 up to 14 hours on the first wireless Logitech, this is a real Rolls Royce. Some getting used to: the high skidded insert key, which is therefore to be confused with 1 Pos. HP products have always been worth the money. My first HP printers 1999 runs the way today even without problems ...