Louis Erard x Alain Silberstein Le Régulateur Tourbillon Blue | LE50

The latest edition of the Louis Erard x Alain Silberstein Le Régulateur Tourbillon introduces a striking blue sunray dial that highlights Silberstein’s unmistakable visual language while showcasing the technical sophistication of a regulator-style tourbillon watch. At six o’clock, the tourbillon created by renowned watchmaker Olivier Mory of La Chaux-de-Fonds takes center stage, revealing its rotating cage along with visible bridges and gear train components. The signature regulator layout displays minutes at the center and hours at 12 o’clock, while Silberstein’s iconic yellow serpentine seconds hand glides across the dial, bringing motion and playful contrast to the highly technical composition.

Available for pre-order on March 26th, 2026
A limited edition of 50 pieces annually
Ref. 89356TT05.BTT90 

The watch is housed in a lightweight 40 mm microblasted titanium case designed for everyday comfort and modern durability. Paired with a heathered blue strap featuring an integrated scratch fastening system, the design eliminates the need for a traditional buckle, resulting in fewer components and a more ergonomic fit on the wrist. Inside, the tourbillon movement demonstrates refined mechanical architecture and precision finishing, visible through the sapphire caseback. Limited to just 50 pieces per year, Le Régulateur Tourbillon Blue stands as a rare luxury tourbillon watch that blends contemporary Swiss watchmaking, avant-garde design, and the unmistakable creative identity of Alain Silberstein.


TECHNICAL SPECIFICATIONS
Calibre
BCP T02 calibre
Movement
- Tourbillon régulateur mechanical hand-wound
- Tourbillon cage makes a complete rotation every 60 seconds.
Jewels
19
Frequency
21,600 Vph
Power Reserve
~100 hours
Functions
- Hour hand in a counter at 12 o'clock
- Central minute hand
- Seconds hand in a counter at 6 o'clock.
Case
- Microblasted grade 2 titanium & polished grade 5 titanium
- 47 mm thickness, .
Diameter
40 mm
Case back
Exhibition transparent case back
Glass
Sapphire crystal with anti-reflective treatment on both sides
Water Resistance
10 bars (100 m/330 ft)
Dial
- Blue sunray with white transfers
- Counter at 12 o'clock
- Grey and red transfers
- Cut out at 6 o'clock to see the tourbillon
Hands
Alain Silberstein signature hands:
- Red lacquered hour hand
- White lacquered minute hand
- Yellow lacquered second hand
Strap
- Heathered blue nylon and microblasted grade 2 titanium
- Hook-and-loop fastener system for quick adjustment
- Functional catch spring bars allowing the strap to be changed quickly
Strap Dimensions
- 22.7/22.7 mm
- 225 mm length (suitable for a wrist circumference of 140 to 200 mm).

Shop the Louis Erard x Alain Silberstein collection here.


Oster Jewelers is a Louis Erard Authorized Retailer Partner.