Hamilton Khaki Air Race 38mm 499.00 PayPal F&F, Venmo. or Zelle. No Trades Please Hamilton Khaki Air Race 38mm. This is the discontinued 38mm model. Comes in travel pouch and with tag. If you have any questions or need more photos, please ask. Caliber : H-10 Collection : Khaki Aviation Movement : Automatic Case size : 38mm Thickness (mm) : 10.8 Crystal : Sapphire Lug width : 19mm Power reserve : 80 hour Water Resistance : 5 bar (50m)/73 psi (164ft) Anti Reflection : Yes Open Case Back : Yes A three-hand movement with or without a date function and boasting a superior power reserve of 80 hours, the H-10 appears with intricate contrasting snail and pearled patterns for the American Classic models it drives and streamlined surfaces for the pilots’ watches.