Patent ID: 7976214

Claim:
A portable watch comprising: an annular body having an interior, a front side, and a back side and containing a time display portion at the front side that displays time; and a back lid screwed into the back side of the body to close the interior of the body from the back side thereof and formed with a lid marking arranged so as to be aligned with a 12 o'clock to 6 o'clock direction of a the time display portion, wherein the body includes an annular lid mounting portion having a thread and a lid receiving surface on the side of the interior of the body with respect to the thread, the back lid includes a lid plate having an annular projection that extends around the lid plate in a circumference direction, the back lid being superimposed on the lid receiving surface and having the lid marking on a front surface thereof, and a holding ring having a thread meshed with the thread, the holding ring being mounted on the lid mounting portion by screwing the same and clamping the annular projection in cooperation with the lid plate to fix the lid plate, and the lid mounting portion includes a detent portion, the lid plate includes an engaging portion engageable with the detent portion, and the lid marking on the front surface of the back lid aligns with the 12 o'clock to 6 o'clock direction in a state in which the engaging portion and the detent portion engage with each other.