The Verso modification is based on a beautifully half-skeletonized Unitas 6497 movement that has been inversely fitted to show off the balance wheel and the impressive workings of the movement. The small second on the caseback assumes the function of a pulsometer. When the small second hand crosses the start line, start counting your pulse until you reach 20 beats; the pulsometer display indicates your heart rate. Screwed-on, unibody Stainless Steel Blue dial ring with engraved hour markers and Limited Edition number.