Doxa Watch Sub 200 Professional Rubber 799.10.351.21. This 3 hand divers watch has a case made of highest quality 316L stainless steel. At a diameter of 42 mm, the SUB 200 is topped by a scratch resistant sapphire crystal with an anti reflective coating and the distinctive curvature of the domed plexiglass used back in the day. Waterproof to a depth of 200 meters 20 ATM, the model features a unidirectional rotating bezel. All the elements providing dive relevant information, including the bezel, have a Super LumiNova luminescent coating.