Have received it and read the instructions after playing with it first!!! Purchased it with the bike mount too. Have been out on the bike today with it for the first time and it is fantastic. You can customise the screen to show various readings/measurements, but today I had it on the standard setting. Shows your speed and distance like any other bike computer, but once home you plug it into the PC and it shows a whole lot more and plots it onto graphs so you can keep track of it in diary form. Money well spent if anyone is concidering one of them!! I also used it in conjunction with my Sigma bc600 and it was suprising to find how accurate that was. At the end of the ride only a .2 of a mile difference showing and the speed was showing the same for the majority of the ride, although the forerunner shows it more accurately as it has .'s