Blancpain Bathyscaphe

Blancpain's Bathyscaphe 5100 1140 O52A is a steel watch with a case measuring 38 mm across and 10.8 mm thick. The sunburst blue dial has a lug width of 20 mm and sits under a sapphire crystal. Inside is the self-winding calibre 1150, which stores 100 hours of power reserve, a figure well above what most automatic movements offer. The dial shows a central seconds hand and a date window. Blancpain fits the watch to a sail-canvas strap closed with a pin buckle. The case holds a 300 metre water resistance rating, generous for a watch of this diameter.