Biking provided the inspiration for this unconventional design, with its central star and bolt-shaped case. Or, more to the point, the bikers that wind their way across the US astride 1,500 cc of horsepower and polished chrome. Finnish watchmaker Stepan Sarpaneva has captured this spirit in the Korona Ko Daredevil, a watch that will see you through the darkest nights thanks to its exceptional luminescence. The three parts of the base plate are coated in Super-LumiNova®, then crowned with a two-part skeleton dial with black and blue DLC treatment. Not only do the luminescent elements change colour depending on whether it's night or day, their afterglow is incredibly vibrant thanks to LumiCast technology from RC Tritec, owner of LumiNova Swiss, in partnership with Japanese firm Nemoto. This Daredevil comes as two versions: Dusk and Dawn.