Swatch WHAT IF…SKY? The square BIOCERAMIC sky blue watch case features edge-to-edge biosourced glass that gives a side view of the watch's printed white indexes. The square dial has silver-colored glow-in-the-dark hands and a day-date window at 3 o'clock. The dial is complemented by an integrated biosourced strap with a BIOCERAMIC buckle. A printed battery cover on the back depicts a front view of the watch.