Horizon Open Heart – Blue Dial
Free tracked delivery
Hand-assembled
2-year warranty
Watch Specifications
- Case: 316L stainless steel
- Diameter: 41 mm
- Thickness: 12 mm
- Dial: Blue Open Heart – 28.5 mm
- Crystal: Sapphire, scratch-resistant with anti-reflective coating
- Case back: Sapphire exhibition case back
- Crown: Screw-down for improved water resistance
- Hands: Luminous baton – Luminova
- Bracelet: Integrated 904L stainless steel – 25 mm
- Wrist size: Adjustable 14.5–22 cm (tool included)
- Water resistance: 10 ATM (100 m / 330 ft)
- Weight: 140 g
Each Chrono Mod Horizon Open Heart – Blue Dial is hand-assembled and tested for precision, durability, and distinctive presence. A sleek fusion of craftsmanship and mechanical elegance, built for those who appreciate refinement and bold design.
WHY THIS MOVEMENT
Your watch is powered by the Seiko NH38A — one of the most trusted automatic movements in modern watchmaking.
What makes it special: it's a true mechanical heart. A weighted rotor spins with your wrist movement, winding the mainspring naturally — no battery, no circuits. The seconds hand sweeps in a smooth, continuous motion that only a real automatic can deliver.
24 jewels, 41 hours of power reserve, and a hacking function that stops the seconds hand when you pull the crown so you can set the time to the exact second.
Tested and regulated before assembly for long-term reliability. This is the same caliber found in watches costing 3–5x more.
SHIPPING, RETURNS & WARRANTY
Free Worldwide Shipping
Tracked delivery to 24+ countries. All duties and taxes prepaid — zero surprises at your door. Delivery within 8–15 business days.
Handcrafted In 3–5 Days
Each watch is assembled by hand, tested for water resistance and accuracy, then carefully packed. No mass production your watch is built for you.
30-day Returns
Not what you expected? Return it within 30 days for a full refund. No questions asked.
2-year Warranty
Covers any manufacturing defect. We repair or replace at no cost, worldwide.
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CRAFTSMANSHIP
THE MOVEMENT, REVEALED
Open-heart dial exposing the beating balance wheel, horizontal embossed finish in deep blue, applied baton indices. You don't just wear the time — you see it come alive with every tick.
QUALITYBUILT
LIKE WATCHES 5X THE PRICE
Integrated steel bracelet with satin-brushed links and hidden butterfly clasp. Seamless from case to wrist. The same construction used by luxury Swiss brands — without the markup.
THE HORIZON
THIN CASE, BOLD PRESENCE
Octagonal bezel, recessed crown with crown guards, brushed and polished finishing on every angle. A silhouette that stands out in any room — on your terms.
CUSTOM BUILDS
54,000+ DESIGNS CREATED
2,900+ watches delivered worldwide · Custom dials, engravings & casebacks
FREE SHIPPING
Tracked delivery, worldwide
2-YEAR WARRANTY
Movement & assembly guaranteed
HAND-ASSEMBLED
Built by hand, quality-checked twice
DESIGNED IN FRANCE
Refined aesthetics with timeless French elegance
Need help?
FREQUENTLY ASKED QUESTIONS
A Chrono mod is a one-of-a-kind timepiece, custom-made and impossible to find in traditional retail stores.
Handcrafted by experts, these watches combine original Seiko components with carefully selected non-Seiko parts, chosen for their quality and style.
Each watch undergoes a series of rigorous tests to ensure its performance and reliability:
- Water Resistance: A thorough check of the water resistance to ensure perfect sealing.
- Demagnetization: A demagnetization process to preserve the proper functioning of sensitive components.
- Chronometer Adjustment: Precise adjustment of the watch to achieve accuracy within -5 to +5 seconds per day.
These quality checks are carried out with care before shipping, ensuring you receive a watch that is ready to use, reliable, and high-performing.
For every order, we provide you with the necessary tool to adjust the bracelet to your wrist yourself.
This allows you to easily customize the fit at home, at no extra cost.