Actually the missing upper right button makes it a little different to operate. Sometimes the light button takes over the function that you might expect from the upper right button, like scrolling backwards. Personally I rather would have seen a classic 4 button control of the functions and optional the light button as the 5th button. The 6 button control of the G-9200 is a little over the top I guess. The lower right button is also used for direct access to the Altimeter from Timekeeping Mode.