The ref. 3881.50.37 Speedmaster Broad Arrow is powered by caliber 3603, which adds a GMT function to this automatic chronograph. The ‘broad arrow’ hands are a hint to the original 1957 Speedmaster. This watch is powered by caliber 3603.
The ref. 3881.50.37 Speedmaster Broad Arrow is powered by caliber 3603, which adds a GMT function to this automatic chronograph. The ‘broad arrow’ hands are a hint to the original 1957 Speedmaster. This watch is powered by caliber 3603.
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