Replica Hamilton Khaki Aviation SeriesHamilton Khaki Aviation X-Mach (H76626535)

Brand: Hamilton Replica
Series: Khaki Aviation
Model: H76626535
Dial Color: Black
Dial Indexes: Arabic numerals
MBrand:Hamilton
Caliber:H-21
Base:ETA 7750
Display:Analog
Diameter:30.00 mm
Jewels:25
Reserve:60 h
Frequency:28800 bph
Time:Hours, Minutes, Small Seconds
Date:Date, Day
Chronograph:Chronograph
The Hamilton H-21 is based on the Valjoux 7750. The H-31 is similar though based on the 7753. These movements most notable change compared to the standard version is the 60 hour power reserve.

The following elements have been modified:

- The entire kinematic chain has been refined, from the barrel to the escapement
- The escapement regulator has been suppressed, facilitating optimal reliability and precision
- The main spring has been improved to increase a typical power reserve of 60 hours.
- The mono-block rotor is distinctively skeletonized with an “H” shape and aviation-inspired cut-outs, a signature of individualization.
Case Material:Stainless steel
Case Glass:Sapphire
Case Back:Open
Case Shape:Round
Case Diameter:44.00 mm
Case Lug Width:22.00 mm
W/R:100.00 m
“Mach” refers to a measurement of speed used by high performance aircraft. It is based on the ratio of the speed of an aircraft compared to the speed of sound under the same atmospheric conditions. Rugged, smart and masterfully engineered, the 44 mm Khaki X-Mach accurately calculates a pilot’s speed as it relates to sound.