Hamilton Watch Khaki Field Murph Auto 38 H70405730. The 38mm Khaki Field Murph Auto is here. One of the science fiction's most famous watches known by fans as 'The Murph' is now housed in a compact 38mm stainless steel case. Featuring ultra readable black dial, beige vintage style Super LumiNova finished hands and black leather strap, it reflects the key aesthetic codes of its 42mm predecessor. Powered by the H-10 automatic movement boasting an 80 hour power reserve, this Khaki Field Murph Auto will capture the hearts of those who are in love with smaller watches.