Classic 2612/1421639 / Aviator

This is the Aviator Classic 2612/1421639. The 2612 designates the movement in use, which is a mechanical (manual wind) movement with 18 jewels. The most intriguing bit of this movement is the alarm complication. You do have a separate crown to use for winding and setting the alarm time, so you don’t need to be concerned that using the alarm will shorten the life on the power reserve (which is a respectable 42 hours) — via Wrist Watch Review