Ernst Benz Chronolunar Traditional in stainless steel on yellow leather strap. Auto w/ subseconds, date, day, moonphase and chronograph. 47 mm case size. Ref GC10311. Fine Pre-owned Ernst Benz Watch. Certified Pre-owned Sport Ernst Benz Chronolunar GC10311 watch is made out of Stainless steel on a Yellow Leather strap with a Stainless Steel tang buckle. This Ernst Benz watch has a 47 x 47 mm case with a Round case back and Black Arabic Numeral dial. It is Certified Pre-Owned watch and comes backed by our 12-month warranty. Each watch is inspected by our in-house watchmakers before shipment including final servicing, cleaning, and polishing, if needed.