Hamilton Khaki Aviation X-Wind Auto Chrono

The Hamilton Khaki Aviation X-Wind Auto Chrono, reference H77506540, is a chronograph with a 44 mm steel case water resistant to 100 metres. A sapphire crystal covers the blue dial with day and date displays beside an inner rotating bezel. The 15.6 mm-thick case measures 55 mm from lug to lug, with a see-through back, a screw-down crown and a calfskin strap with a pin buckle at 22 mm lugs. Self-winding calibre H-21 delivers a 60-hour power reserve.