If you have yet to embrace watches under 40mm, it might be time to explore the idea of wearing a smaller timepiece. Hamilton has just revealed its latest model, the 36mm Khaki Pilot Pioneer Mechanical, a reissue of their classic W-10, a watch that was created for the British Royal Air Force in 1973. The Khaki Pilot Pioneer Mechanical houses their H-50 movement, a hand-wound movement with a very impressive 80-hour power reserve and it can be equipped with either a fabric or leather NATO strap. 

$845-$895, hamiltonwatch.com