IWS Factory's latest masterpiece, the highest version on the market, IWC's marine chronograph series, a true fusion of diving and timing watches, is not to be missed! R2 1 Rotating diving outer ring with background lighting. 2 Inside the multi-functional outer ring is a 4mm wide sapphire glass ring with printing and concentrated Super-LumiNova luminous coating on the bottom. 3 Rough hour markers and scales , and covered with silver coating, which emits light in a dim environment, allowing you to grasp the time at all times. 4 Material: 316L stainless steel 5: Diameter: 44 mm 6: Movement equipped with Asia-movement machinery! Let the timing function be everywhere! IWS’s ingenious masterpiece welcomes your tasting! You deserve it! Famous craftsman Swiss watch exquisitely recommends men’s multi-functional mechanical watches. Famous craftsman Swiss watch carefully creates ultra-real physical pictures for you, IWC