DB28GS 'Grand Sport'
DB28GS 'Grand Sport'
DB28GS 'Grand Sport'
DB28GS 'Grand Sport'
DB28GS 'Grand Sport'

DB28GS 'Grand Sport'

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The GS moniker stands for Grand Sport, our first-ever venture into the world of a Haute Horology sports watch back in 2015.

The DB28GS follows the De Bethune tradition of innovation and pushing the limits of what can be done in watchmaking. Built with a full grade 5 titanium finished by hand, with an imposing 44mm case diameter, which is coupled with our signature floating lugs also in grade 5 titanium. More weight saving is taken by the addition of the natural rubber strap featuring a microlight motif, a first among the brand’s collections, which also contributes to making it extremely pleasant to wear, as wearer comfort is something we have always strived for.

The DB28GS might have sport in mind with the design but the finishing is still 100% De Bethune quality. Hand-crafted refined finishes, which were performed in our workshops at L’Auberson, like the microlight decoration of the bridges and main-plate, the flat polishing of the deltoid-shaped bridge, or the deep azure shade of the hands achieved using the ancestral flame-blueing technique.

Inside the GS is the calibre DB2115. Equipped with a self-regulating twin barrel ensuring a 6-day power reserve – a performance that can be tracked by means of a blue indicator at 3 o’clock. A titanium balance wheel with a white gold insert and balance-spring with flat terminal curve ensures the ideal inertia-mass ratio for an optimal frequency of 28,800 vph suited to wristwatches. 

The watch also undergoes a number of reliability and shock-resistance tests, which it passes with flying colours notably because of its triple pare-chute shock-absorbing system that protects the heart of its movement by a titanium bridge held by a spring system. Three jewels connect the various elements, serving not only to absorb shocks but also to secure the bridge in case of abrupt displacements. As a sports watch the DB28GS can also withstand three full leagues under the sea with a water resistance of 10 ATM.

Sport chic the DB28GS is a perfect allrounder, built to be worn and enjoyed no matter if you’re in the office or the pool. And now 5 years after its initial release, you have the chance again to buy our first ever sports watch, fully refurbished and tested with a new 24-month preowned guarantee, fresh rubber strap and an original De Bethune display box. So jump in and make a splash today with the Grand Sport.

Production Year: 2018
Model Launch Year: 2015
Number Of Watches Produced: 32

Original Retail Price: 69’500.00 CHF

Name: DB28 Grand Sport
Reference: DB28GSV1AN

Functions: Hours, Minutes, Performance indication between 2 and
3 o’clock
Movement: DB2115v2
Type: Mechanical hand-wound movement
Adjustment: Winding and setting the time by means of the crown (2 positions)

Technical features of calibre DB2115v2:
Number of parts: 263
Jewelling: 35 jewels
Diameter: 30 mm
Power reserve: 6 days, ensured by a self-regulating twin barrel
De Bethune Innovation (2004)

Specificities: Titanium balance wheel with white gold inserts, optimised for temperature differences and air penetration
De Bethune Patent (2016)

"De Bethune" balance-spring with flat terminal curve
De Bethune Patent (2006)

Silicon escape wheel

Triple pare-chute shock-absorbing system
De Bethune Innovation (2005)

Frequency: 28,800 vibrations per hour

Adornment: Mirror- polished grade 5 titanium motion-work bridge
Plate and barrel bridge covers in hand-smoothed grade 5 titanium and adorned with “Microlight engraving” De Bethune Innovation (2007)
Hand snailed barrels
Hand-polished and chamfered steel parts

Display: Hand-smoothed grade 5 titanium with hand-polished flame-blued steel hours hand
Hand-polished flame-blued steel minutes hands
Performance indication between 2 and 3 o’clock

Dial: Hand-smoothed grade 5 titanium minute ring with blue relief Arabic numerals

Case and strap:
Case material: Hand-smoothed grade 5 titanium
Case diameter: 44 mm
Case thickness: 11,2 mm
Lugs: Long floating lugs in hand-smoothed grade 5 titanium – De Bethune Patent (2006)
Crystal: In sapphire crystal (1800 Vickers hardness) with double anti-reflective coating
Case back: Screwed down closed back in hand-smoothed grade 5 titanium
Water resistance: 10 ATM
Strap: De Bethune rubber strap
Buckle: Pin buckle in hand-smoothed grade 5 titanium


All PreOwned purchases come with free shipping on behalf of the De Bethune team as a thank-you for choosing our Certified Preowned platform. Once payment is received in full, we endeavor to ship your new De Bethune  as soon as possible (usually within 2-3 days.) Please note that shipping will be delayed if payments are taken over the weekend, bank or national holidays.

*All prices are excluding any importation taxes & fees requested by the buyers country policy. If taxes & fees should be applied at the importation, They should be carried by the buyer.

Based on your location, we will choose the right shipping agent to ensure your watch reaches to swiftly and safely. Once it has been collected from us, we will email you to confirm and share the tracking details.

If shipping is delayed for unforeseen reasons, you will be notified immediately so we can agree on the best possible outcome. 

*Please note due to restrictions on exotic leather in certain countries, your new purchase might be sent on a different strap than pictured. This is to avoid delays at customs. We will send the correct strap separately. 

We trust it won't happen, but in the unlikely event that you are not fully satisfied, please contact us on +41 22 310 22 71 and we will be happy to go over our returns process with you. 

Please note that we cannot refund returned items unless all elements on the returns checklist have been confirmed.


1. All tags and labels are in their original state and place and have not at any point been removed from the watch.

2. The timepiece has not been worn and is free of any marks or scratches that were not present at the time of shipping.

3. All instructions, warranty card, packaging etc. are in the same condition as at the time of shipping.

4. The timepiece is returned to us within 14 days (De Bethune does not cover the cost of shipping. The watch must be shipped via an official courier and be fully insured.)

Please contact us on +41 22 310 22 71 as soon as you are aware of a fault with your watch.

After the watch has been returned to De Bethune for a full inspection and approved for a refund, please allow up to 14 days from the date of receipt for processing. Funds will be credited back using the original payment method.
Should you have any further queries regarding our returns policy, please do not hesitate to contact us via e-mail at boutique@debethune.com

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