Louis Erard x Alain Silberstein Smile-Day Blue | LE250

The Louis Erard x Alain Silberstein Smile-Day Blue returns with a playful yet thoughtful perspective to contemporary Swiss watchmaking, once again blending the artistic vision of Alain Silberstein with the precision of Louis Erard. At six o’clock, a distinctive Smiledays display reveals the mood of the day through a changing smiley motif that evolves throughout the week. The expression appears in black from Monday through Friday and shifts to red for the weekend, creating a lighthearted visual reminder that time carries its own personality. Set against a vibrant blue sunray dial, Silberstein’s unmistakable design language appears through bold geometric forms and primary colors, delivering an instantly recognizable look that balances artistic expression with practical timekeeping.

Available for pre-order on March 26th, 2026
A limited edition of 250 pieces annually
Ref. 75357TT05.BTT90 

The dial’s striking composition features the designer’s signature hands: a red triangular hour hand, a white arrow-shaped minute hand, and a yellow serpentine seconds hand that moves with playful energy. Beneath the design lies a reliable Swiss automatic movement, the Sellita SW220-1, offering day and date functionality alongside classic hours, minutes, and seconds. Housed in a 40 mm titanium case combining microblasted grade 2 and polished grade 5 finishes, the watch pairs durability with lightweight comfort. With 100 meters of water resistance, a visible movement through the sapphire caseback, and a limited annual production of 250 pieces, the Smile-Day Blue stands out as a collectible luxury watch that merges independent design, creative horology, and everyday wearability.


TECHNICAL SPECIFICATIONS
Movement
- Automatic
- Sellita SW220-1 Calibre
- Day/Date at 6 o'clock
Jewels
26
Frequency
28,800 Vph (4Hz)
Power Reserve
~38 hours
Functions
- Hours, minutes, seconds
- Mood of the day/date
- 3 central hands
Case
- Microblasted grade 2 titanium & polished grade 5 titanium
- 2 pieces
Measurements
- 40 mm diameter
- 22 mm lug width
- 47 mm lug-to-lug
- 11.60 mm thickness
Dial
- Blue sunray
- White transfers
- Signature Alain Silberstein Day Disc ("Smiledays") and date at 6 o'clock
Hands
Alain Silberstein signature hands:
- Red lacquered hour hand
- white lacquered minute hand
- Yellow lacquered second hand
Glass
Sapphire crystal with anti-reflective treatment on both sides
Case back
- Movement visible through the transparent caseback
- Engraved with "Louis Erard x Alain Silberstein 1 of 178"
Crown
Alain Silberstein red lacquered signature crown with Louis Erard symbol 
Water Resistance
10 bars (100 m/330 ft)
Strap
- Heather 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
- 22.70 mm width 
- 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.