Speedmaster Professional Moonwatch

“Moonwatch Professional 1861 (sapphire)”

The sapphire version of the long-running 1861 Moonwatch, produced from 1996 to 2021, this reference swaps the Hesalite crystal for sapphire and is fitted with the display-back caliber 1863, manual-winding at 21,600 vph with a 48-hour reserve. It otherwise shares the 42 mm stainless steel case,…

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