Innovative, adventurous and accurate. It's what pilots need in a timepiece and Hamilton always delivers. The Khaki X-Wind features the first ever drift angle calculator to appear in a watch and helps pilots accurately calculate how crosswinds will affect their journey. With a technical look and automatic movement that also suits urban aviators down to the ground it's the perfect everyday co-pilot.*Featured in Independence Day: Resurgence (2016). Worn by Jake Morrison, played by Liam Hemsworth. KHAKI AVIATIONThe Khaki Aviation collection perfectly displays Hamilton's technical know-how when it comes to creating reliable watches for pilots and urban aviators. SELF-WINDINGWrist movements cause the inner rotor to swing, transferring energy to the mainspring, and powering your timepiece.STAINLESS STEEL CASEA highly resistant alloy composed of steel and chromium. It can be worked to resemble a precious metal. It is nearly impervious to rust, tarnish, and corrosion.SAPPHIRE CRYSTALSynthetic sapphire crystal is a tough scratch-resistant material, only diamonds could leave a mark.H-21 CALIBERAn exclusive caliber specifically developed for our automatic watches, the H-21 has an extended power reserve of up to 60 hours.WATER RESISTANCEYour timepiece is resistant up to 10 bar (100m) / 145 psi (328 ft).