B022 ?Rotary? is a mechanical wristwatch which we have constructed base on a ?ETA? caliber 2824-2 Swiss automatic movement as a power source. From there, we have designed and constructed a twin-rotary construction module on top which simulate the motion of the iconic Rotary engine. The large rotor with the triangular pointers rotating with a fixed but non-uniformed track at the bottom alongside with the applied metal indexes on the left-hand side of the dial will represent the time in ?HOURS?, whereas the smaller triangular 3-pointer rotor on top alongside with the metal applied indexes on the right-hand side of the dial will represent the time in ?MINUTES?. (Both rotors are installed with sufficient numbers of rubies for reducing friction and to increase efficiency.) The dial and the rotors do come with luminous to show time in the dark. The dial has been skeletonized so that the mechanism can be clearly seen.