Photos appear once Duckworth Prestex approves image use
Big Date Automatic
From Duckworth Prestex
BIG DATE Coin Edge, Open Heart automatic A refined expression of traditional watchmaking, the Prestex Big Date Automatic Open Heart combines classical design with contemporary mechanical detail. The beautifully textured dial features a prominent big date display at 12 o’clock, offering enhanced legibility while maintaining a clean, balanced aesthetic. At 6 o’clock, the open-heart aperture reveals the beating movement within, adding depth and a sense of craftsmanship to the dial. Elegant blued hands contrast against the silver-toned guilloché-style surface, while applied Arabic numerals provide a timeless, highly readable layout. The polished case is paired with a hand-finished leather strap, available in classic black or rich brown, delivering a versatile look suited to both formal and everyday wear. Subtle detailing across the bezel and dial reflects Prestex’s heritage approach to design, combining vintage inspiration with modern execution. Powered by an automatic movement, the Big Date Open Heart is designed for those who appreciate mechanical watchmaking and understated sophistication. Key Features: Automatic self-winding movement Big date display at 12 o’clock Case dimensions. 39.5mm diameter by 14.50 mm depth. Open-heart aperture showcasing the escapement Textured guilloché-style dial Blued hands for enhanced contrast Polished 39.5mm stainless steel case Genuine leather strap (black or brown) Classic, heritage-inspired design with coin edge top and bottom Hardened mineral crystal front and back Water Resistance 3 ATM 'Splashproof' Now In Stock Available For Immediate Dispatch
Specifications
Details and photos come from Duckworth Prestex’s website, last checked Oct 26, 2026. Specs were read automatically and may contain mistakes.
Case
- Diameter
- 39.5 mm
- Lug-to-lug
- Not listed
- Thickness
- Not listed
- Thickness incl. crystal
- Not listed
- Lug width
- Not listed
- Material
- Not listed
Movement
- Type
- Automatic
- Caliber
- Not listed
- Power reserve
- Not listed
- Functions
- Not listed
Crystal and bezel
- Crystal
- Mineral
- Bezel
- Not listed
Water resistance
- Rated to
- 30 m
Dial and lume
- Dial
- Not listed
- Lume
- Not listed
Strap
- Strap
- Not listed
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