Product Description
Bonest Gatti BG-4002 Skeleton Automatic Watch — BTC-I3, 44mm, Sapphire, 316L Steel
The Bonest Gatti BG-4002 is a men’s automatic mechanical watch built around a fully open-worked skeleton dial, with the movement visible from both the front and the exhibition caseback. A 44mm 316L stainless steel case, synthetic sapphire crystal, raised hour-marker ring, and removable braided-texture fluorine rubber strap give it a bold, technical look that leans modern and sport-inspired rather than dress. Available in blue, black, or green strap and dial-accent finishes.
Key Specifications
| Specification | Details |
|---|---|
| Brand | Bonest Gatti |
| Model | BG-4002 |
| Movement | Self-winding automatic mechanical (BTC-I3) |
| Case material | 316L stainless steel |
| Case diameter | 44mm |
| Case thickness | 12mm |
| Crystal | Synthetic sapphire |
| Dial | Skeleton / open-work, raised hour-marker ring |
| Dial accents | Blue (R1), grey/silver (R2), or green (R3) |
| Caseback | Transparent exhibition back, engraved edge detailing |
| Strap | Removable braided-texture fluorine rubber |
| Buckle | Pin buckle |
| Lume | Luminous hands and markers |
| Water resistance | 30m (3ATM) |
| Strap colours | Blue, black, green |
Skeleton Open-Work Dial
The BG-4002 is built around a fully open mechanical layout — visible gears, bridge plates, screws, and jewel accents sit beneath a raised hour-marker ring that lifts the time display above the movement structure. The result is a layered, three-dimensional dial with real mechanical depth, finished with blue-toned bridge plates on the main R1 version. The same movement is on show through the caseback, so the watch reads as mechanical from both sides.
BTC-I3 Automatic Movement
The BG-4002 runs on a self-winding BTC-I3 automatic mechanical movement, powered by the natural motion of the wrist with no battery required for normal use. As an automatic, it winds itself during wear and can be left to run through regular daily use.
Synthetic Sapphire Crystal
The front crystal is synthetic sapphire, giving a clearer, more scratch-resistant surface than standard mineral glass and keeping the skeleton dial sharp and legible over long-term wear.
316L Stainless Steel Case
The 44mm case is 316L stainless steel with a polished finish and darker case detailing, angular lugs, and a clean crown profile. At 12mm thick with a transparent exhibition caseback, it carries a substantial, statement presence on the wrist. The caseback also features engraved product detailing around its edge.
Removable Braided Rubber Strap
The strap is fluorine rubber with a braided-style surface texture, flexible and comfortable for everyday wear. It is removable, making strap swaps straightforward without specialist tools.
Luminous Reading
The hands and markers carry a luminous coating, keeping the watch readable in lower-light conditions.
Exhibition Caseback
The rear of the watch uses a transparent exhibition caseback, displaying the automatic movement in motion and completing the dual-sided mechanical theme of the design.
Water Resistance
The BG-4002 is rated 30m (3ATM), suitable for everyday wear, light splashes, and rain. It is not intended for swimming, showering, or submersion. Avoid operating the crown when the watch is wet.
Colour Options
BG-4002-R1 — Blue. Blue braided strap with blue-toned skeleton dial accents for a cool, space-inspired look. This is the main configuration shown.
BG-4002-R2 — Black. Black strap with grey and silver skeleton dial accents.
BG-4002-R3 — Green. Green strap with green-toned skeleton dial accents.
Who It’s For
The BG-4002 suits buyers who want a visible mechanical movement and strong wrist presence. The large 44mm case, raised hour ring, exposed movement, and textured rubber strap give it a modern, technical, statement style — a fit for those drawn to skeleton and sport-inspired automatic watches over a traditional dress watch.
Related Bonest Gatti Watches
If the BG-4002’s open-work design appeals, these skeleton and automatic pieces sit in the same family:
- Bonest Gatti BG9960 Gravity Series skeleton watch — 45mm tonneau case with an exposed RTC-13 movement.
- Bonest Gatti BG5602 King Sport automatic — large 46×51mm tonneau skeleton with a sport-driven build.
- Bonest Gatti BG9902 Ghost Speed automatic — tonneau skeleton dial running a Citizen automatic movement.
- Bonest Gatti BG8004 Roulette automatic — automatic mechanical watch with a rotating roulette-style display.
- Bonest Gatti skeleton sport watch (5ATM) — skeleton sport model with a higher 50m water resistance.
Browse the full lineup in the Roulette Watches collection.
FAQ
Does this watch need a battery? No — the BG-4002 uses a self-winding BTC-I3 automatic mechanical movement, powered by wrist motion.
Can I see the movement? Yes — the skeleton dial shows the movement from the front, and the transparent exhibition caseback displays it from the rear.
Is the crystal genuine sapphire? The watch uses a synthetic sapphire crystal, which is more scratch-resistant than standard mineral glass.
Is it suitable for swimming or diving? No. At 30m (3ATM) it is rated for everyday wear, splashes, and rain only — not swimming, showering, or submersion.
Can I change the strap? Yes — the braided fluorine rubber strap is removable.
What colours are available? Blue (R1), black (R2), and green (R3), each with matching skeleton dial accents.
Product Description: Stainless Steel Automatic Skeleton Watch Collection
For the modern watch enthusiast who values both craftsmanship and versatility, our Stainless Steel Automatic Skeleton Watch Collection stands as a testament to horological artistry and everyday functionality.
Core Craftsmanship & Design
- Premium Stainless Steel Case: The corrosion-resistant stainless steel case is built for longevity, boasting a sleek, polished finish that balances ruggedness with refined elegance. It forms the perfect frame for the watch’s star feature—the fully exposed skeleton dial, which offers an unobstructed view of the automatic movement’s intricate gears and oscillating rotor.
- Precision Automatic Movement: Powered by a high-performance automatic movement, this watch eliminates the need for batteries. It harnesses the natural motion of your wrist to self-wind, ensuring consistent, accurate timekeeping while celebrating the mechanical heritage of watchmaking.
- Ergonomic Dimensions: With a 44mm dial diameter and a slim 12mm thickness, the watch strikes a perfect balance between a bold visual presence and all-day wearability. It sits comfortably on most wrist sizes, making it suitable for both casual outings and formal occasions.
Comfort & Practicality
- Durable Rubber Strap: The soft, flexible rubber strap is engineered for durability and comfort, resisting wear, sweat, and water exposure. It is available in three vibrant color options—navy blue, classic black, and fresh green—allowing you to match your watch to any outfit or mood.
- Reliable Pin Buckle: The precision-engineered pin buckle ensures a secure, customizable fit, with an intuitive design that makes putting on and taking off the watch effortless.
This collection is more than a timekeeping device; it is a wearable showcase of mechanical ingenuity. Whether you opt for the understated black strap, the timeless navy, or the bold green, this automatic skeleton watch seamlessly blends art, function, and personal style.
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 awesome. The box too.