Uniting the iconic heritage of the world’s first scratch-proof watch with the captivating rhythm of openworked Swiss mechanics, the Rado DiaStar Original Open Heart 35mm is a masterwork of vintage-futuristic luxury. Defined by its signature oval silhouette framed in mirror-polished Ceramos™, a faceted sapphire crystal, an artfully sculpted open-heart dial revealing the oscillating balance wheel, and an advanced Swiss automatic calibre, this mid-size timepiece offers timeless elegance and extraordinary surface resilience.
Key Highlights
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Ultra-Hard Ceramos™ Bezel Coiffe: Crafted from Rado’s patented composite of 90% high-tech ceramic and 10% metal alloy, providing platinum-like shine, lightweight wear, and supreme scratch resistance (~1,750 Vickers).
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Sculpted Open Heart Dial Architecture: Geometric dial apertures beautifully frame the beating balance wheel, escapement, and finely decorated mechanical bridges in continuous motion.
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Swiss Automatic Calibre with Nivachron™: High-precision self-winding movement fitted with an anti-magnetic Nivachron™ hairspring, offering robust shock resistance and up to 80 hours of power reserve.
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Faceted Sapphire Crystal: High-clarity, scratch-resistant sapphire crystal engineered with geometric facets on the inner surface for dynamic light play across the open dial.
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Dual Sapphire Transparency: Open-heart dial on the front combined with a transparent sapphire exhibition case back to admire the mechanical calibre from both angles.
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Versatile 35mm Mid-Size Case: Ergonomically contoured oval silhouette crafted in 316L stainless steel, designed for balanced comfort on slender and medium wrists alike.
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Signature Moving Anchor Emblem: Features Rado's free-spinning ruby-mounted anchor at 9 o’clock, symbolizing authentic Swiss automatic engineering.
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100-Metre Water Resistance: Rated for 10 bar (100 m / 330 ft) to protect against swimming, rain, and everyday water exposure.
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5-Year Official International Warranty: Fully covered globally under Rado’s authorized manufacturer guarantee.
Design & Craftsmanship
The Legacy of DiaStar Reimagined in Open-Heart Form
When Rado introduced the DiaStar in 1962, it reshaped the horological world by creating the first scratch-proof wristwatch. The DiaStar Original Open Heart honors that distinctive oval helmet profile while introducing mechanical transparency, inviting the wearer to observe the precision oscillation of the balance spring with every glance.
Ceramos™: Ceramic Durability with Metallic Radiance
Engineered by Rado—the "Master of Materials"—the polished bezel is made from proprietary Ceramos™. Sintered at extreme temperatures, this composite unites the hardness and thermal comfort of ceramic with the lustrous shine of metal, ensuring the iconic bezel remains untarnished and pristine for decades.
Swiss Automatic Precision with Nivachron™
Beneath the dial beats a finely regulated Swiss automatic movement. Equipped with a titanium-based Nivachron™ balance spring, the movement resists magnetic fields from smartphones, laptops, and everyday electronic devices, ensuring long-term timekeeping precision across an extended autonomous power reserve.
5 Reasons why you should buy watches from Zimson – Since 1948 , Celebrating 75 years
- Zimson is the authorised retailer for Rado in India
- Zimson deals and sells only authentic watches and all the watches will be furnished with an invoice , brand warranty and brand packaging .
- Zimson is in the business of watch retailing since 1948
- Zimson has a strong after-sales service back up with state of art watch servicing facilities
- Zimson has gained the trust of over million customers throughout these years from our online www.zimsonwatches.com and offline stores present in Bangalore , Chennai , Kochi , Coimbatore , Salem , Madurai , Trichy and Pondicherry .
5 Frequently asked questions from our shoppers:
Are the watches sold at Zimsonwatches.com authentic ?
Ans: Yes , all the watches sold online at zimsonwatches.com and offline stores are 100% authentic and genuine .
Will the warranty be active if I buy online ?
Ans: Yes , all the watches come with brand warranty which can be from 1 yr to 7 years , depending on the brand which is ordered .
How soon can I get my watch once order placed ?
Ans: Once the order is confirmed , order will be processed within 24 hours and despatched within 48 hours and should reach the respective location in 2-3 working days from the time of despatch .
Which courier partner will be used to send the watch ?
Ans: Bluedart , DTDC Plus , Shiprocket .
Can I place order online and collect offline ?
Ans: Yes! One can place the order online and collect his or her watch offline at the desired store , prior information needs to be given so we can facilitate this .
