Seiko Alpinist

Seiko Prospex SPB503 "Terra" men's watch, a mechanical field watch designed for everyday adventure and maximum reliability. Inside beats the automatic 6R55 caliber with manual winding capability, 24 jewels, hacking seconds, and a power reserve of approximately 72 hours (+25/-15 sec/day accuracy). The stainless steel case with super-hard coating measures 39.5 mm (12.7 mm thick; 46.4 mm lug-to-lug) and houses a sapphire crystal with internal anti-reflective coating for consistently sharp readability; LumiBrite on the hands and indices guarantees visibility in the dark. Its technical vocation is confirmed by a rotating bezel with compass, screw-down crown, transparent screw-down case back, and water resistance up to 20 bar, with magnetic resistance of 4,800 A/m. A triple push-button folding clasp, 20 mm lug width, and 147 g weight complete a rugged, precise, versatile timepiece, ideal for both city and outdoors.