The largest display, with up to 3000 nits of brightness — the brightest display Apple has ever designed. Large enough to see up to six lines of workout metrics at a glance. Readable even in direct sunlight. Always-On technology keeps the display on so you can see key information at a glance. The new exclusive Modular Ultra watch face is easily customizable and shows real-time altitude, depth, or second on the outermost edges, and Night Mode can activate automatically in the dark.