Hamilton Khaki Field Mechanical Power Reserve 40mm

The Hamilton Khaki Field Mechanical Power Reserve 40mm, reference H69509130, carries a black dial in a 40 mm steel case water resistant to 100 metres. Hand-wound calibre H-23 has a Nivachron balance spring and an 80-hour reserve. At 11.95 mm thick and 48 mm from lug to lug, the case comes on a steel bracelet with a folding clasp at the 20 mm lugs. Under a sapphire crystal, central seconds sit beside the power reserve indicator, marked F for full or E for empty.