Adding a unique, modern dash of style, the Heritage Chronograph pays homage to this golden era of mechanical precision. We discovered the original 1940s version of this watch and later at high-end vintage watch retailer Bulang Sons. It inspired us to incorporate it into the CoLAB project. The result is a beautiful two-tone silver; sunbrushed and light silver opalin dial, with black sector print and blue tachymeter scale and blue hands. Modest at first glance, this watch will reveal its sophistication when given a closer look. Specifications Material : 316l Stainless Steel Diameter : 39 MM Thickness : 13,9 MM (10,5 Mm W/o Crystal) Caseback : Screwed Down Crystals : Double Domed Sapphire With Ar Coating Inside Lug-to-lug : 47,35 MM Lug Width : 20 Mm Water Resistance : 5 ATM / 50 M Movement Movement : LC-450 Type : Mechanical Winding : Hand-wound Chronograph : Column-wheel Power Reserve : 60 Hours Vibrations : 28,800 Vph Jewels : 23