Navigate the skies with our Khaki Aviation Converter Auto Chrono equipped with a bi-directional, rotating slide-rule bezel to calculate critical conversions and metrics at a glance. Fitted with the H-21-Si movement with silicone hairspring for increased performance and accuracy, this pilot watch blends function and aviation aesthetics to perfection: its 44mm stainless steel case is paired with a stainless steel bracelet and a blue dial evoking visions of clear skies.
- Caliber H-21-Si
- Collection Khaki Aviation
- Movement Automatic
- Watch Function Chronograph, Date, Day, Tachymeter
- Case size 44mm
- Thickness (mm) 14.6
- Dial color Blue
- Case material Stainless steel
- Crystal Sapphire
- Lug width 22mm
- Power reserve 60 hour
- Status status_current_collection
- Water Resistance 10 bar (100m)/145 psi (328ft)
- Anti Reflection Yes
- Open Case Back Yes
- Screw Down Crown Yes
- Silicon Balance Spring Yes
- Strap reference H6057671021
- Strap type Stainless steel
- Buckle type Folding clasp
- Buckle width 22mm
H-21-Si
The H-21-Si is an automatic chronograph movement featuring a state-of-the-art balance spring made from the anti-magnetic material silicon for enhanced resistance to extreme atmospheric conditions. With an extended 60-hour power reserve, this powerful caliber reliably keeps and measures time via two or three sub dials at 6, 9 and/or 12 o’clock, and start/stop and reset pushers on the side.




















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