The Romer 508821 47 53 50 The Superior Moonphase Is A Men'S Watch With An Excellent Swiss Chronograph Movement Under The Hood. On The Detailed Dial You Will Not Only Find The Time Display But Also The Moon Position. The Movement In This Watch Is A Quartz Movement With A Battery. This Swiss Watch Is Waterproof Up To 50 Meters And The Watch Case Is Made Of Stainless Steel.