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Khaki Aviation X-Wind Auto Chrono

Automatic | 45mm | H77916920



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.



  • Watch

    Reference H77916920
    Caliber H-21-Si
    Collection Khaki Aviation
    Movement Automatic
    Case size 45mm
    Dial color Brown
    Case material Stainless steel
    Coating PVD beige
    Crystal Sapphire
    Lug width 22mm lug width
    Power reserve 60-hour power reserve
    Water Resistance 10 bar (100m)
    Anti Reflection Yes
    Open Case Back Yes
    Screw Down Crown Yes
    Silicon Balance Spring Yes
  • Bracelet/Strap

    Strap reference H6007791021
    Strap type Textile
    Buckle type Pin buckle
    Buckle width 22mm
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