De Bethune DB28GS Grand Bleu. The DB28 GS Grand Bleu is the first 100% sport watch created by De Bethune: a diver's watch offering water resistance to 10 bar (100 metres / 330 feet), a unidirectional rotating bezel and readability even in poor light conditions. The price of the De Bethune DB28 GS Grand Bleu ref. DB28GSV2AN is Swiss Francs 93,500.
The DB28 GS Grand Bleu is the first 100% sport watch created by De Bethune: a diver's watch featuring a unidirectional rotating bezel and offering water resistance to 10 bar (100 metres / 330 feet) and readability even in poor light conditions.
The 44 mm case offers great comfort thanks to the lightness of titanium, the 12 o’clock crown position and, above all, the presence of the patented system of floating lugs that adapt to wrist size and movements.
The case is enhanced by a rotating bezel enabling the wearer to calculate immersion time. But, in this case, the indications are not on the bezel itself but on the sapphire crystal driven by the bezel.
A special lighting system illuminates the watch and the movement from the inside. The slightly bluish white light source is produced by a fully mechanical means that works on the dynamo principle.
A pusher at 6 o'clock activates a small gear train driven by the twin barrel. This gear train, by means of a miniature dynamo, provides the necessary energy for lighting the watch. A few seconds of light is more than enough to read the time, even in the middle of the night.
To improve the readability of the hands, a new blue photoluminescent material was developed that is capable to cast the perfect De Bethune blue during the day and radiate the same tone in the dark. Named Blue Moon, this new luminescent material, is proprietary to De Bethune.
For the DB28 GS Grand Bleu, a new calibre was entirely developed and manufactured by De Bethune. Beating at a frequency of 28,800 vibrations per hour with a power reserve of five day, the hand-wound DB2080 calibre is equipped with a state-of-the-art titanium/white gold balance wheel with white gold inserts, optimised for temperature differences.
The calibre is also equipped with the triple pare chute system. De Bethune was not only the first to design a bridge symmetrical held on both sides and thus serving to maintain the balance wheel perfectly in position, but also added two shock absorbers on either end as well as that of the balance wheel itself. Hence the name triple pare chute.
The model is delivered with two straps: a canvas version and a striated natural rubber iteration with titanium folding clasp, which also contributes to the wearer comfort.
The price of the De Bethune DB28 GS Grand Bleu ref. DB28GSV2AN is Swiss Francs 93,500. debethune.ch
The 44 mm case offers great comfort thanks to the lightness of titanium, the 12 o’clock crown position and, above all, the presence of the patented system of floating lugs that adapt to wrist size and movements.
The case is enhanced by a rotating bezel enabling the wearer to calculate immersion time. But, in this case, the indications are not on the bezel itself but on the sapphire crystal driven by the bezel.
A pusher at 6 o'clock activates a small gear train driven by the twin barrel. This gear train, by means of a miniature dynamo, provides the necessary energy for lighting the watch. A few seconds of light is more than enough to read the time, even in the middle of the night.
To improve the readability of the hands, a new blue photoluminescent material was developed that is capable to cast the perfect De Bethune blue during the day and radiate the same tone in the dark. Named Blue Moon, this new luminescent material, is proprietary to De Bethune.
For the DB28 GS Grand Bleu, a new calibre was entirely developed and manufactured by De Bethune. Beating at a frequency of 28,800 vibrations per hour with a power reserve of five day, the hand-wound DB2080 calibre is equipped with a state-of-the-art titanium/white gold balance wheel with white gold inserts, optimised for temperature differences.
The model is delivered with two straps: a canvas version and a striated natural rubber iteration with titanium folding clasp, which also contributes to the wearer comfort.
The price of the De Bethune DB28 GS Grand Bleu ref. DB28GSV2AN is Swiss Francs 93,500. debethune.ch
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