The Heritage Numeral Chronograph Ref. 324.497 draws direct inspiration from a historic piece that helped spark the brand’s revival, featuring a multi-scale dial with tachymeter, telemeter, and minute track for a true vintage chronograph feel. Its sandblasted dial, polished subdials, and contrasting blue and black hands create a balanced, classic look, powered by the hand-wound LC-450 column-wheel chronograph movement with a 60-hour power reserve.

Technical Specifications:

• Case: 316L stainless steel
• Diameter: 39mm
• Thickness: 13.9mm (10.5mm without crystal)
• Caseback: Screwed down
• Crystal: Double-domed sapphire with internal AR coating
• Lug-to-lug: 47.35mm
• Lug width: 20mm
• Water resistance: 50m (5 ATM)
• Caliber: LC-450
• Type: Mechanical, hand-wound
• Chronograph: Column-wheel
• Power reserve: 60 hours
• Frequency: 28,800 VPH
• Jewels: 23