Certina DS Type X-02 Chronograph - 538.7181.42.61 - Quartz - ca. 2010 - 43.5mm Certina DS Type X-02 Sport Classic Chronograph, reference 538.7181.42.61. Stainless steel 43.5mm case with a rotating dive-style bezel and sapphire crystal, powered by the Swiss ETA G10.211 quartz chronograph movement. Certina has built watches in Grenchen since 1888, and the DS concept — "Double Security" — is the house signature for reinforced, gasket-sealed sport cases. The Type X-02 sits in Certina's sport-diver line: a 100m-rated steel chronograph with a high-legibility black dial, luminous markers and a three-counter layout. It is a robust, honest Swiss sport piece from the era when Certina leaned hard into rugged everyday tool watches. - Movement: Swiss quartz chronograph, ETA G10.211 - Case: Stainless steel 316L, 43.5mm (excluding crown), ~11mm thick - Dial: Black with luminous round markers and double-baton at 12, three sub-counters, date - Crystal: Sapphire - Bezel: Rotating dive-style bezel, black insert with luminous pip - Strap: Original Certina black rubber with signed steel folding clasp - Functions: Hours, minutes, seconds, date, chronograph - Water resistance: Rated 100m / 330ft when new — seal untested, not guaranteed - Crown: DS signed crown with crown guards The watch presents in very good condition. The black dial is clean and the sapphire crystal shows no significant damage. The bezel insert shows scratches and scuffs consistent with regular use — the main cosmetic point to note. The case carries light marks from wear. Powered by the dependable ETA G10.211 quartz chronograph. Complete with the original Certina presentation box. From a private collection. With original Certina box; no papers. Shipped fully insured, tracked, and signature-required worldwide.