OMEGA gents wristwatch Seamaster Professional chronometer, self winding, reference 25318000, stainless steel including bracelet with deployant clasp & diver extension, screwed down case back & winding crown, helium valve at 10, arched sapphire crystal, unidirectional revolving bezel, display of hours, minutes, sweep seconds & date, diameter approx. 41 mm, length approx. 20,5 cm, original box & papers, sold in October 2001, condition 2, property of a collector