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Description
Specifications
Warranty
Returns
Additional Information
Description

AstroSphere DualCore – Twin Tourbillon Timepiece
All eyes on your wrist.

The AstroSphere DualCore isn’t just a watch—it’s a conversation starter. With twin exposed flywheels in motion and a globe at its heart, this timepiece brings the universe to your fingertips. The open worked dial glows after dark, radiating a mysterious charm that turns heads day or night.

Wrapped in a polished steel case and finished with a  leather strap, it’s designed for those who appreciate complexity, beauty, and bold statements. Every glance reveals a new detail. Every second, a reminder that you don’t follow time—you lead it.

Own it, and let the world take notice.

 

Specifications

Case Material: Stainless steel with diamond knife polish finish
Movement: Shanghai JHS15 hollow mechanical movement

  • jewels: 45Gems
  • Frequency: 21,600 vibrations/hour
  • Power Reserve: 42 hours

Crystal: Diamond knife-crafted glass mirror – clear, bright, and water-repellent
Dial: Skeletonized twin flywheel design with rotating globe calendar and luminous accents
Caseback: Transparent stainless steel exhibition back for movement visibility
Strap: Soft leather strap with double-press butterfly clasp
Water Resistance: 50 meters – suitable for handwashing, rain, and swimming
Case Diameter: 44mm
Case Thickness: 15mm
Strap Width: 22mm
Strap Length: 18cm

Warranty

International Warranty Terms – HANBORO
In accordance with the terms outlined in this warranty, Hanboro offers a 24-month international warranty on your timepiece, effective from the date of purchase. This warranty covers all material and manufacturing defects present at the time of delivery of the watch.

To activate your warranty, the warranty certificate must be fully and correctly completed, dated, and stamped by an official Hanboro dealer (“valid warranty certificate”). With a valid certificate, any covered defects will be repaired free of charge during the warranty period.

The Warranty Covers:Manufacturing defects in the movement, case, and dial.

Faults in material or workmanship present at the time of delivery.

The Warranty Does Not Cover:Normal wear and tear or aging, including but not limited to:

Scratches on the crystal or case

Fading or damage to non-metal straps (rubber, leather, textile)

Peeling or discoloration of plating

Damage caused by misuse or accidents, such as:

Drops, impacts, dents, or crushing

Exposure to harmful chemicals or extreme conditions

Use not in accordance with Hanboro’s instructions

Any watch serviced, opened, or modified by unauthorized personnel or service centers.

Water damage if the watch’s water resistance level has been exceeded or tampered with.

Any indirect or consequential damage or claims beyond the scope of this warranty.

For service or warranty claims, please contact your nearest authorized Hanboro service center or reach out to us directly with your valid warranty certificate.

Returns
At Hanboro, we take pride in offering timepieces crafted to the highest standards of quality and design. Due to the premium craftsmanship, attention to detail, and the exclusivity of our international brand, we regret to inform our customers that we do not accept returns.

However, in the case of a manufacturing defect, we will be happy to replace your watch. For more details on what constitutes a manufacturing defect and the terms of replacement, please refer to the warranty clause provided on our website.

We appreciate your understanding and assure you that your purchase will reflect the exceptional quality and luxury that Hanboro represents. If you have any further concerns regarding the same, please contact us, and we will be happy to assist you.
Additional Information

JHS15 mechanical movement

Thickness: 7.1mm

45 gems

Frequency 21600 times/hour

Stop second function

Automatic/manual loading

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Frequently Asked Questions
Whether you're curious about the craftsmanship, care guidelines, or after-sales support, we 
ensure a seamless experience by addressing key inquiries with clarity and precision. Explore to learn more about owning and 
maintaining your Hanboro timepiece.
What defines a Hanboro timepiece?
Are Hanboro watches water-resistant?
What warranty do you offer?
How should I care for my Hanboro watch?
Do you ship internationally?
What defines a Hanboro timepiece?
Every Hanboro watch is a statement of precision, craftsmanship, and individuality. Designed with purpose, built to last — our timepieces reflect those who lead with quiet confidence.
Are Hanboro watches water-resistant?
Yes. Each Hanboro watch is crafted with water resistance suitable for daily use. Specific resistance levels vary by model and are detailed in each product description.
What warranty do you offer?
All Hanboro watches are backed by a 2-year international warranty, covering any manufacturing defects in the movement or craftsmanship. Because excellence deserves assurance.
How should I care for my Hanboro watch?
To preserve its elegance and performance, avoid exposure to harsh chemicals or extreme conditions. Clean gently with a soft cloth and store your timepiece in its original case when not in use.

Do you ship internationally?
Yes, we offer worldwide shipping. Every order is handled with care and precision — much like our timepieces — and includes tracking from dispatch to delivery.