Bonest Gatti BG5602 King Sport Automatic Watch — BTC-13, 46×51mm Tonneau, Skeleton
The Bonest Gatti BG5602 King Sport is a 46×51mm BTC-13 automatic skeleton watch in an oversized tonneau case — a proprietary Bonest Gatti automatic caliber visible through the open-work dial. AR-coated sapphire crystal, 316L stainless steel case at 12mm, fluororubber (FKM) strap at 27mm tapering to 22mm with steel buckle, super-luminous details and 50m water resistance. Available in four colour configurations.
Key Specifications
| Specification | Detail |
|---|---|
| Model | BG5602 (King Sport Series) |
| Case shape | Tonneau (oversized) |
| Case dimensions | 46mm × 51mm |
| Case thickness | 12mm |
| Case material | 316L stainless steel |
| Crystal | Sapphire with AR coating |
| Movement | BTC-13 automatic (Bonest Gatti proprietary) |
| Dial | Skeleton / open-work |
| Luminous | Super-luminous — hands and markers |
| Strap | Fluororubber (FKM), 27mm tapering to 22mm |
| Buckle | Steel buckle |
| Water resistance | 50m (5 ATM) |
BTC-13 Movement — Bonest Gatti Proprietary Caliber
The BTC-13 is Bonest Gatti’s proprietary automatic caliber designation. Unlike watches using third-party movements (Seiko NH35, Miyota 8215, Hangzhou), the BTC-13 is Bonest Gatti’s own movement specification — the brand controls the caliber’s design and production parameters. The specific jewel count, beat rate, power reserve and service history of the BTC-13 are not listed in the available documentation. The movement is visible through the skeleton dial during wear.
For buyers who prioritise movement serviceability through established global networks, the BTC-13’s proprietary status is worth noting — service options are likely more limited than NH35 or Miyota. For buyers who prioritise the visual character of the skeleton dial and the King Sport aesthetic, the movement’s operational reliability is the primary concern.
46×51mm — Oversized Tonneau
At 46×51mm the BG5602 is a large-format watch by any measure. The tonneau dimensions describe the case width (46mm) and height (51mm) — the case is taller than it is wide, creating an elongated barrel shape that extends along the wrist axis. This creates a very large visual footprint — the 51mm height spans most of the width of a standard wrist.
For buyers who specifically want an oversized statement watch, the BG5602’s dimensions are intentional and appropriate. For buyers accustomed to 38–42mm cases, the 46×51mm is a significantly larger presence than standard sizing. Wrist size recommendation: 17cm and above for proportional wear.
Fluororubber (FKM) Strap
The BG5602 uses a fluororubber (FKM) strap — fluoroelastomer rubber, chemically distinct from standard silicone or natural rubber straps. FKM offers:
Chemical resistance: Resists oils, fuels and solvents that would degrade standard rubber — relevant for active or industrial wear environments.
Temperature range: Remains flexible across a wider temperature range than silicone.
Durability: More abrasion-resistant than standard rubber straps at equivalent thickness.
The 27mm-to-22mm taper from case to buckle is proportional to the oversized case — a standard 20mm strap would look visually undersized on a 46×51mm tonneau.
AR-Coated Sapphire Crystal
The sapphire crystal has anti-reflective (AR) coating — reducing glare from the crystal surface and improving dial visibility in bright overhead or side lighting. AR coating on sapphire is a meaningful specification for a skeleton watch specifically, as skeleton dials are more complex visually and benefit from maximum dial clarity. Uncoated sapphire can create bright reflections that obscure the movement components visible through the open-work dial.
Skeleton Dial on the BG5602
The open-work dial exposes the BTC-13 movement components — gear train elements, bridges and the balance assembly are visible between the structural dial elements. The King Sport’s skeleton architecture differs from the turbine-inspired BG9902 and the geometric BG7702 — the BG5602’s open-work is paired with the oversized tonneau for a more conventional luxury sports skeleton presentation.
BG5602 vs BG9902 vs BG7702 — Bonest Gatti Skeleton Range
| Feature | BG5602 King Sport | BG9902 Ghost Speed | BG7702 Gorilla |
|---|---|---|---|
| Case | 46×51mm steel tonneau | 40mm steel tonneau | 42mm optical glass |
| Movement | BTC-13 proprietary | Citizen auto | Citizen auto |
| Crystal | Sapphire + AR | Sapphire | Not specified |
| Strap | FKM fluororubber | Rubber | Rubber |
| Water resistance | 50m | IP68 | 3ATM |
| Character | Oversized luxury statement | Motorsport turbine | Transparent floating |
Choose BG5602 for the largest case, FKM strap and proprietary BTC-13 movement. Choose BG9902 for IP68 water resistance and Citizen movement in a standard-sized tonneau. Choose BG7702 for the transparent case floating effect.
Who Is the Bonest Gatti BG5602 For?
The BG5602 is built for:
- Oversized tonneau buyers who want the 46×51mm large-format case in a skeleton automatic
- FKM fluororubber strap buyers who want the chemical-resistant premium strap material on a statement watch
- Proprietary movement enthusiasts who specifically want a non-generic caliber on a Bonest Gatti King Sport
- Bold wrist presence buyers who want a skeleton watch that commands visual attention at any distance
More from Jewelry Addicts
- Bonest Gatti Watches — full Bonest Gatti range
- Bonest Gatti BG9902 Ghost Speed — standard-sized tonneau skeleton
- Bonest Gatti BG7702 Gorilla — transparent case skeleton
- Bonest Gatti BG8004 Roulette — Bonest Gatti statement dial alternative
- Best Automatic Watches Under $500 — full roundup
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.
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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