Hamilton Men's Pulse Clock Hamilton Collection American Classic Collection Intra-Matic Auto Chrono Reference H38416111. 40mm size steel case with 14.45 mm thickness. Sapphire glass. White dial color. Ansa width 20 mm. Steel strap with folding buckle, 20mm buckle width. American Classic collection with automatic charge movement, H-31 caliber. 60 -hour charge reserve. Waterproof: 10 bar (100m) Special features: Anti reflexion and screw crown. H-31 caliber functions: Automatic charge, automatic chronograph, date, 60 -hour charge reserve, quick correction of the date, movement with laser decoration, two or three counters. Reinterpretation of the iconic clock dated 1968. Vintage inspiration model with finely worked steel jersey bracelet, a unique style with maximum comfort. *box used only for p.