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All the watch news, reviews, videos you want, brought to you from fellow collectors
Marking the fourth chapter of its 250th anniversary celebrations, Breguet has introduced the Classique Tourbillon Sidéral 7255, limited to just 50 pieces. Launched on June 26, 2025, the date is no coincidence—it commemorates June 26, 1801, the day Abraham-Louis Breguet secured the patent for his revolutionary invention, the tourbillon.
The Classique Tourbillon Sidéral 7255 features Breguet’s first flying tourbillon, which uses a rare and impressive design called a ‘mysterious’ construction. The tourbillon appears to float in space, supported only from below with no visible upper bridge. This is made possible by a hidden sapphire structure, creating an illusion of suspension. The complex mechanism demands precision, balance, and strength—which is brought into account with the new Calibre 187M1 movement that drives the timepiece. It hides the parts that power the tourbillon, adding to the mysterious effect. The tourbillon is both the centrepiece and the key structural feature—it sits 2.2 mm above the movement and 0.9 mm above the dial, standing 7 mm tall. This height shapes the entire design, contributing to the watch’s 10.2 mm thickness.
The Calibre 187M1 is a manual-winding movement with a 1-minute flying tourbillon. It beats at a frequency of 2.5 Hz and offers a 50-hour power reserve. It is beautifully finished with Côtes de Genève, Breguet’s signature guilloché, and 18K Breguet gold bridges.
The name “Sidéral” refers to sidereal time, which measures time using the stars instead of the Sun. This links the watch to astronomy, echoing the old meaning of ‘tourbillon’ as ‘something rotating rapidly in a circle’. This cosmic connection has been carried onto the watch through its dial, which is made from aventurine enamel, a sparkling material made of glass and copper particles that looks like a starry night sky. Created through a complex process with at least five firings in a kiln at over 800°C, every dial is unique. A gold base with a raised rim and tourbillon bezel helps keep the delicate aventurine enamel in place during the firing process. Gold Breguet Arabic numerals, the inscriptions “Breguet” and “Tourbillon,” and hollowed 18K gold hands complete the starlit design.
The watch is housed in 18K Breguet gold, a special alloy with silver, copper, and palladium, giving it a rich, warm glow. It also features a new decorative pattern called Quai de l’Horloge guilloché, named after Breguet’s historic Paris address. This pattern appears on both the movement and the caseback, which is engraved with “BREGUET 250 YEARS”.
Finally, the Breguet Classique Tourbillon Sidéral 7255 comes with a navy blue alligator leather strap, lined on both sides, and an 18K Breguet gold folding clasp. It is presented in a special red leather commemorative case, inspired by Breguet’s traditional Moroccan leather boxes.
What we think -
Breguet is truly bringing the heat this year to mark their 250th Anniversary. Regular production versions of these terrific examples of timekeeping and watchmaking excellence would be highly appreciated and we hope the brand doesn’t miss out on this opportunity.
Marking the fourth chapter of its 250th anniversary celebrations, Breguet has introduced the Classique Tourbillon Sidéral 7255, limited to just 50 pieces. Launched on June 26, 2025, the date is no coincidence—it commemorates June 26, 1801, the day Abraham-Louis Breguet secured the patent for his revolutionary invention, the tourbillon.
The Classique Tourbillon Sidéral 7255 features Breguet’s first flying tourbillon, which uses a rare and impressive design called a ‘mysterious’ construction. The tourbillon appears to float in space, supported only from below with no visible upper bridge. This is made possible by a hidden sapphire structure, creating an illusion of suspension. The complex mechanism demands precision, balance, and strength—which is brought into account with the new Calibre 187M1 movement that drives the timepiece. It hides the parts that power the tourbillon, adding to the mysterious effect. The tourbillon is both the centrepiece and the key structural feature—it sits 2.2 mm above the movement and 0.9 mm above the dial, standing 7 mm tall. This height shapes the entire design, contributing to the watch’s 10.2 mm thickness.
The Calibre 187M1 is a manual-winding movement with a 1-minute flying tourbillon. It beats at a frequency of 2.5 Hz and offers a 50-hour power reserve. It is beautifully finished with Côtes de Genève, Breguet’s signature guilloché, and 18K Breguet gold bridges.
The name “Sidéral” refers to sidereal time, which measures time using the stars instead of the Sun. This links the watch to astronomy, echoing the old meaning of ‘tourbillon’ as ‘something rotating rapidly in a circle’. This cosmic connection has been carried onto the watch through its dial, which is made from aventurine enamel, a sparkling material made of glass and copper particles that looks like a starry night sky. Created through a complex process with at least five firings in a kiln at over 800°C, every dial is unique. A gold base with a raised rim and tourbillon bezel helps keep the delicate aventurine enamel in place during the firing process. Gold Breguet Arabic numerals, the inscriptions “Breguet” and “Tourbillon,” and hollowed 18K gold hands complete the starlit design.
The watch is housed in 18K Breguet gold, a special alloy with silver, copper, and palladium, giving it a rich, warm glow. It also features a new decorative pattern called Quai de l’Horloge guilloché, named after Breguet’s historic Paris address. This pattern appears on both the movement and the caseback, which is engraved with “BREGUET 250 YEARS”.
Finally, the Breguet Classique Tourbillon Sidéral 7255 comes with a navy blue alligator leather strap, lined on both sides, and an 18K Breguet gold folding clasp. It is presented in a special red leather commemorative case, inspired by Breguet’s traditional Moroccan leather boxes.
What we think -
Breguet is truly bringing the heat this year to mark their 250th Anniversary. Regular production versions of these terrific examples of timekeeping and watchmaking excellence would be highly appreciated and we hope the brand doesn’t miss out on this opportunity.
