ROLEX gents wristwatch Oyster Perpetual Date Sea-Dweller 4000, self winding, reference 16600, S-series, Switzerland around 1994, superlative chronometer officially certified, stainless steel including oyster bracelet, display of hours, minutes, sweep seconds & date under sapphire crystal, unidirectional revolving bezel with 60-minute graduation, screwed-down case back & winding crown, gas escape valve outside 9, calibre 3135, 31 jewels, flat rim balance, flat hairspring, Rolex box enclosed, diameter approx. 40 mm, length approx. 19,5 cm, signs of use due to age, neutral certificate, condition case 2-3, condition movement 2, discontinued model