Product Description
Hanboro Open-Heart Automatic — Japanese Miyota Movement
Most watches hide their engine. This one puts it on show. Through the open heart at the centre of the dial you can watch the balance wheel breathe — tick after tick, driven by nothing but the swing of your own wrist. It’s the detail that makes people lean in and ask what you’re wearing.
Inside beats a genuine Japanese Miyota automatic — the movement family the microbrand world trusts for its reliability. No battery, ever: it winds itself as you move, running at 21,600 beats per hour with around 40 hours of reserve when you set it down. You can follow every oscillation through the open dial.
The 39 mm case is forged from 316 stainless steel and finished with diamond-cut brushing that catches the light along every edge of its cushion-octagon “porthole” silhouette. Over the dial sits a sapphire crystal — the hardest, clearest glass in watchmaking — so it shrugs off the scratches that dull lesser watches. The layered dial comes in deep blue, warm brown or stealth black, with bold applied markers that glow after dark, and a 24-hour and seconds register framing the open heart for a purposeful, technical face that still reads clean at a glance.
At 39 mm by 11 mm on a soft canvas strap with a secure double-push butterfly clasp, it wears light and easy from desk to dinner. Choose steel with a blue, black or brown dial — or a punchy orange strap — or go warmer with a rose-gold-tone case in blue or brown. Six looks in all.
Want the same character with a closed dial? See the Hanboro 018 micro-rotor automatic. After a chiming complication? Try the Hanboro Chime 9015 automatic. Cross-shopping the style, browse more octagonal-design automatics and Phylida watches — or, if you’re new to mechanical watches, start with our guide to the best Chinese automatic watches.
Highlights
- Open-heart automatic — see the balance wheel move through the dial
- Genuine Japanese Miyota self-winding movement — no battery
- 316 stainless steel case with a diamond-cut brushed finish
- Scratch-resistant sapphire crystal
- Layered dial, luminous markers, open heart, 24-hour & seconds registers
- Compact 39 mm × 11 mm; secure double-push butterfly clasp
- Six colourways — steel (blue / black / brown / orange strap) and rose-gold-tone (blue / brown)
Specifications
| Brand / series | Hanboro — Steel King |
| Movement | Japanese Miyota automatic, self-winding, open-heart · 21,600 vph · 21 jewels · ~40 h reserve |
| Crystal | Sapphire |
| Case | 316 stainless steel, diamond-cut brushed finish; cushion-octagonal porthole bezel |
| Diameter / thickness | 39 mm / 11 mm |
| Dial | Layered; luminous markers; open-heart aperture; 24-hour and seconds registers |
| Strap | Canvas, 18 mm; double-push butterfly clasp; ~18 cm |
| Weight | ~88 g |
Wearing & care
Water resistance isn’t formally rated for this model, so treat it as splash-resistant only — keep it away from swimming, showers, the sauna and submersion, and never use the crown near water. As an automatic it winds from wrist movement; if it sits unworn a day or two it will stop, so give the crown a few turns and reset the time before wearing. Wipe with a soft cloth and keep away from strong magnets and knocks.
Frequently asked questions
Is this a tourbillon watch?
No. It’s an open-heart automatic — an aperture exposes the balance wheel so you can see it oscillate. That’s not a tourbillon, which is a rotating escapement cage. This watch doesn’t have one.
What movement does it use?
A Japanese Miyota automatic that winds from your wrist’s motion — no battery. 21,600 beats per hour, 21 jewels, about 40 hours of power reserve.
Can I swim or shower with it?
No. Water resistance isn’t formally rated, so treat it as splash-resistant only and keep it away from swimming, showers and submersion.
What size is it?
39 mm in diameter, 11 mm thick, on an 18 mm strap; about 88 g.
Does it have a sapphire crystal?
Yes — a scratch-resistant sapphire crystal.
Shipping & Delivery
SHIPPING
We are proud to offer international shipping services that currently operate in over 200 countries and islands world wide. Nothing means more to us than bringing our customers great value and service. We will continue to grow to meet the needs of all our customers, delivering a service beyond all expectation anywhere in the world.
Do you ship worldwide?
Yes. We provide free shipping to over 200 countries around the world. However, there are some locations we are unable to ship to. If you happen to be located in one of those countries we will contact you.
What about customs?
We are not responsible for any custom fees once the items have been shipped. By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country.
How long does shipping take?
Shipping time varies by location. These are our estimates:| Location | *Estimated Shipping Time |
|---|---|
| United States | 5-20 Business days |
| Canada, Europe | 5-20 Business days |
| Australia, New Zealand | 5-20 Business days |
| Central & South America | 5-25 Business days |
| Asia | 5-20 Business days |
| Africa | 5-25 Business days |
Do you provide tracking information?
Yes, you will receive an email once your order ships that contains your tracking information. If you haven’t received tracking info within 5 days, please contact us.
My tracking says “no information available at the moment”.
For some shipping companies, it takes 2-5 business days for the tracking information to update on the system. If your order was placed more than 5 business days ago and there is still no information on your tracking number, please contact us.
Will my items be sent in one package?
For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you've specified combined shipping.
If you have any other questions, please contact us and we will do our best to help you out.
RETURNS
Order cancellation
All orders can be cancelled until they are shipped. If your order has been paid and you need to make a change or cancel an order, you must contact us within 12 hours. Once the packaging and shipping process has started, it can no longer be cancelled.
Refunds
Your satisfaction is our #1 priority. Therefore, you can request a refund or reshipment for ordered products if:
- If you did not receive the product within the guaranteed time (45 days not including 1-3 day processing) you can request a refund or a reshipment.
- If you received the wrong item you can request a refund or a reshipment.
- If you do not want the product you’ve received you may request a refund but you must return the item at your expense and the item must be unused.
We do not issue the refund if:
- Your order did not arrive due to factors within your control (i.e. providing the wrong shipping address)
- Your order did not arrive due to exceptional circumstances outside the control of jwlraddicts.com (i.e. not cleared by customs, delayed by a natural disaster).
- Other exceptional circumstances outside the control of jwlraddicts.com.
*You can submit refund requests within 15 days after the guaranteed period for delivery (45 days) has expired. You can do it by sending a message on Contact Us page
If you are approved for a refund, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 days.
Exchanges
If for any reason you would like to exchange your product, perhaps for a different size in clothing, you must contact us first and we will guide you through the steps.
Please do not send your purchase back to us unless we authorise you to do so.
Refunds & Returns
Order cancellation
All orders can be cancelled until they are shipped. If your order has been paid and you need to make a change or cancel an order, you must contact us within 12 hours. Once the packaging and shipping process has started, it can no longer be cancelled.
Refunds
Your satisfaction is our #1 priority. Therefore, you can request a refund or reshipment for ordered products if:
- If you did not receive the product within the guaranteed time( 45 days not including 2-5 day processing) you can request a refund or a reshipment.
- If you received the wrong item you can request a refund or a reshipment.
- If you do not want the product you’ve received you may request a refund but you must return the item at your expense and the item must be unused.
We do not issue the refund if:
- Your order did not arrive due to factors within your control (i.e. providing the wrong shipping address)
- Your order did not arrive due to exceptional circumstances outside the control of jwlraddicts.com (i.e. not cleared by customs, delayed by a natural disaster).
- Other exceptional circumstances outside the control of //jwlraddicts.com
*You can submit refund requests within 15 days after the guaranteed period for delivery (45 days) has expired. You can do it by sending a message on Contact Us page
If you are approved for a refund, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 days.
Exchanges
If for any reason you would like to exchange your product, perhaps for a different size in clothing. You must contact us first and we will guide you through the steps.
Please do not send your purchase back to us unless we authorise you to do so.
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