Product Description
Berny AM312M Gold Dress Watch – Miyota 9015, Sapphire Caseback, 5ATM
The Berny AM312M is a slim gold-finished dress watch built around the Miyota 9015 — a respected high-beat Japanese automatic movement. Domed mineral crystal over a guilloché-textured dial, paired with a sapphire exhibition caseback showing the gold-toned oscillating rotor. Ultra-thin 11.5mm gold-plated stainless steel case. Quick-release leather strap. Date window at 3 o’clock. 5ATM water resistance. 62g. Available in multiple dial colour variants.
Key Specifications
| Specification | Details |
|---|---|
| Brand | BERNY |
| Model | AM312M |
| Movement | Miyota 9015 automatic |
| Frequency | 28,800 vph |
| Accuracy | -10 to +30 seconds per day (factory rated) |
| Jewels | 24 |
| Power reserve | ~42 hours |
| Hacking | Yes |
| Case diameter | 40.5mm |
| Lug to lug | 48mm |
| Thickness | 11.5mm |
| Case material | Stainless steel, gold-plated |
| Crystal (front) | Domed mineral glass |
| Caseback | Sapphire crystal exhibition |
| Strap | Quick-release leather, 20mm |
| Max wrist size | 190mm |
| Weight | 62g |
| Water resistance | 5ATM / 50M |
| Clasp | Stainless steel pin buckle |
| Functions | Hours, minutes, seconds, date |
Miyota 9015 — High-Beat Automatic Movement
The Miyota 9015 is a well-regarded Japanese automatic movement manufactured by Citizen’s Miyota division — introduced in 2009 as Miyota’s premium thin caliber, designed to compete with mid-tier Swiss movements. It runs at 28,800 vph (4Hz), noticeably smoother than the 21,600 vph common to entry-level automatics, with 24 jewels and approximately 42-hour power reserve. It hacks (the seconds hand stops when the crown is pulled for time setting) and supports manual hand-winding alongside automatic self-winding.
Miyota’s own official factory rating for accuracy is -10 to +30 seconds per day. In practice, many properly regulated 9015 movements run tighter than the published factory tolerance, though individual results vary based on position, temperature, and regulation. The 9015 has built a strong reputation among microbrand watchmakers as a reliable, smooth-running, slim movement at an accessible price point.
Domed Crystal and Guilloché Dial
The front crystal uses a domed profile rather than a flat one — a classic European dress-watch detail that adds visible depth and dimensionality to the dial. Beneath it, the dial carries a guilloché texture, a fine engraved pattern that catches and reflects light differently depending on viewing angle, giving the watch face a subtle shifting character rather than a single flat surface.
Sapphire Exhibition Caseback
Turning the watch over reveals a full sapphire crystal exhibition caseback, providing a clear, scratch-resistant view of the gold-toned oscillating rotor and the Miyota 9015 movement underneath. Note that the front crystal is domed mineral glass, not sapphire — the sapphire is specifically on the caseback.
Ultra-Thin Gold-Plated Case
At 11.5mm thick, the AM312M is genuinely slim for an automatic watch, allowing it to sit comfortably under a dress shirt cuff. The stainless steel case carries a gold-plated finish for its formal aesthetic. At 62g total weight, it stays light and comfortable for all-day wear.
Quick-Release Leather Strap
The leather strap uses quick-release spring bars, allowing the strap to be swapped without tools — useful for switching between formal and more casual looks, or simply replacing a worn strap over time. Maximum wrist size is 190mm.
5ATM Water Resistance
Rated 5ATM / 50M — suitable for handwashing, rain, and daily wear including incidental splash exposure. Not intended for swimming or diving.
Related BERNY Watches
For another Miyota 9015-powered model, see the BERNY AM212M (40.5mm, suede strap). For other slim dress watch options, see the BERNY 2944M Men’s Dress Watch (Miyota 1L45, guilloché dial) and the BERNY 2945M Women’s Gold Dress Watch. For other skeleton and open-heart automatics, see the BERNY AM093M Skeleton Automatic Watch (Miyota 8N24, leather strap) and the BERNY AM179M Gold Automatic Skeleton Watch. Browse the full BERNY watches collection for the complete range, including diver, titanium, chronograph, and GMT models.
FAQ
Is the Berny AM312M a good dress watch? Yes — it’s purpose-built as a dress watch, with a domed crystal, slim 11.5mm case, and guilloché dial texture suited to formal and business wear.
What movement does the Berny AM312M use? The Miyota 9015 automatic movement — a respected Japanese high-beat caliber running at 28,800 vph with hacking and hand-winding capability. Miyota’s official factory accuracy rating is -10 to +30 seconds per day.
Is the Berny AM312M waterproof? It carries 5ATM water resistance, suitable for handwashing, rain, and daily wear. It is not intended for swimming or diving.
Does it have sapphire glass? The caseback is sapphire crystal, providing a scratch-resistant view of the movement. The front crystal is domed mineral glass, not sapphire.
Is the strap replaceable? Yes — the AM312M uses a quick-release leather strap, allowing fast changes without tools.
Who is this watch for? Buyers who want a slim, formally styled automatic dress watch with a documented Japanese movement, suited to business and formal wear.
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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The watch is amazing has a nice weight and easy to size. beautiful and timeless piece.
Dope watch.