Black Bay One 31 | 31mm, Steel, Diamond Blue Dial Calendar while the case back is

while the case back is stamped with the Constellation Observatory medallion

The textured dial of this timepiece is inspired by the ‘Tsuki Ten shin’ or ‘High Moon’ which diffuses light over the night sky

it is averitable fashion icon for women with bold style

The Tank Américaine

Black Bay One 31 | 31mm, Steel, Diamond Blue Dial Calendar while the case back isThe Black Bay One 31 36 39 41 models bring a unique aesthetic to the Black Bay One line. The curved cases feature a combination of finishes that elevates the watch in a contemporary fashion and offers a design language that slightly departs from the brandsiconic tool watch spirit to embrace a sophisticated, versatile, unisex chic look and feel. Fitted with Manufacture Calibers these models are at the cutting edge of technical watchmaking refinement.