กระดานสนทนา > ถาม-ตอบ > CM88
lhanaag
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4 พ.ค. 2569 15:38 #1
Caliber: De Bethune link DB2115v6 Functions: Hours, minutesDiameter: 30mmPower Reserve: Six days via patented (2004) De Bethune twin barrelWinding: ManualFrequency: 28,800 vphJewels: 29Additional Details: Titanium balance with white gold inserts, optimized for temperature differences and link aerodynamics; De Bethune balance spring; link silicon escape wheel; patented De Bethune "pare shock" antishock system.
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lhanaag
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lhanaag@gmail.com