WatchReference : H77906940
Caliber : H-21-Si
Collection : Khaki Aviation
Movement : Automatic
Case size : 45mm
Dial color : Blue
Case material : Stainless steel
Crystal : Sapphire
Lug width : 22mm
Power reserve : 60-hour power reserve
Water Resistance : 10 bar (100m)/145 psi (328ft)
Anti Reflection : Yes
Open Case Back : Yes
Screw Down Crown : Yes
Silicon Balance Spring : Yes
Bracelet/StrapStrap reference : H6007791011
Strap type : Textile
Buckle type : Pin buckle
Buckle width : 22mm
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.
Delivery & Return
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We offer returns within 14 days from delivery. For more information, please visit our Return Policy.
*Due to public health restrictions, we may experience delays in processing returns. If you have an item that you would like to return, please contact our customer service department at 1-800-234-8463 or Hamilton.US@swatchgroup.com for additional information.