_..An attractive tone of blue, bordering on grey, is used for the dial embossed with the grid-like Aquanaut pattern that is echoed on the composite strap. Since the annual calendar module has been inverted, the display of the functions is different from other Patek annual calendar models.._ PATEK PHILIPPE 👉🏼 For Uni-sex 👉🏼 Swiss-ETA Automatic machinery 👉🏼 The Aquanaut Luce 5261R 👉🏼 39.9MM Case size.