Hamilton Khaki Field Power Reserve 40mm

The Hamilton Khaki Field Power Reserve 40mm, reference H69509940, measures 40 mm across its steel case, which is water resistant to 100 metres. Crisp numerals, central seconds and a power reserve indicator occupy the blue dial beneath sapphire. The 11.95 mm-thick case spans 48 mm from lug to lug and sits on a textile strap with 20 mm lugs and a pin buckle. Wound by hand, calibre H-23 keeps an 80-hour reserve with a Nivachron balance spring.