Defined by sharp lines and sweeping curves, the Waterbury Sub-second features an enhanced 39mm stainless-steel case with a slimmer profile and an elegant two-tiered bezel. Encircling the black dial are Roman numeral markers and a rail track, paired with a 24-hour format sub-dial just above 6 o'clock. This sophisticated timepiece is paired with a black natural leather strap complete with an enticing crocodile grain and a deployant clasp.