The Defy Extreme 45 of 2021-2023, reference 95.9100.9004/01.I001, is the family's most rugged member, a 45 mm tonneau case in brushed titanium with 200 m water resistance and an integrated chronograph. It runs the El Primero 21 automatic at 36,000 vph with a 50-hour reserve, its openworked sapphire…
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