Hamilton caliber H-51-Si
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H-51-Si description
The H-51-Si is a mechanical 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 hand-wound caliber keeps and measures time via an iconic dial complete with start/stop and reset pushers. With no rotor and no date function, this interactive movement brings modern reliability and precision to signature, vintage-inspired design.