Additional information
| Brand: | Hamilton |
|---|---|
| Family: | Khaki Aviation |
| Reference: | H76686335 |
| Name: | Khaki Aviation X-Mach |
| Limited: | No |
Case
| Material: | Stainless Steel |
|---|---|
| Coating: | PVD |
| Glass: | Sapphire |
| Back: | Open |
| Shape: | Round |
| Diameter: | 44.00 mm |
| Lug Width: | 22.00 mm |
| W/R: | 100.00 m |
Dial
| Color: | Black |
|---|---|
| Indexes: | Arabic Numerals |
Price in euro
Description
?��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.
Movement
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.
| Type: | Automatic |
|---|---|
| Brand: | Hamilton |
| Caliber: | H-21 |
| Base: | ETA7750 |
| Display: | Analog |
| Diameter: | 30.00 mm |
| Jewels: | 25 |
| Reserve: | 60 h |
| Frequency: | 28800 bph |
| Time: | Hours, Minutes, Small Seconds |
| Date: | Date, Day |
| Chronograph: | Chronograph |
More watches using the Hamilton H-21 caliber
