BALL Engineer M Challenger Bronze (43mm) ND2186C-L5C

Ultimate accuracy powered by our in-house movement. Extreme toughness shaped by extraordinary bronze. The Engineer M Challenger Bronze showcases exceptional watchmaking prowess. The automatic BALL Manufacture Caliber RRM7309-C delivers certified C.O.S.C. precision with a robust 80-hour power reserve. And it’s housed inside an ultra-tough aluminum bronze alloy case that offers incredible impact strength and superior corrosion resistance in all environments. LIMITED EDITION 1000 WEIGHT Approx. 100g MOVEMENT Automatic BALL Manufacture caliber RRM7309-C Chronometer certified COSC 80 hours Power Reserve, 28,800vph SIZE (CASE) Ø 43mm, height 13.5mm WATER RESISTANCE 100m/330ft ANTI-MAGNETISM 4,800A/m MICRO GAS TUBES 31 micro gas tubes on hour, minute, second hands and dial for night reading capability FUNCTIONS Hours, minutes, sweep seconds and date 5,000Gs shock resistance CASE MATERIAL Bronze Sapphire crystal and titanium transparent case back CROWN Screwed-i