S01 Sigma Date Calendar - Graphite Black

SPECIFICATIONS

Case: 39 mm
Case Material: 316L surgical-grade stainless steel
Height: 10.4 mm
Lug Width: 20 mm
Lug-to-Lug: 46 mm
Dial Colour: Graphite Black
Dial Finish: Openworked, deep-embossed, and sandblasted
Crystal: Sapphire crystal with inner anti-reflective coating 
Luminescence: Swiss Super-LumiNova® BGW9 grade A
Water Resistance: 50 metres / 5 ATM (tested to ISO standards)
Weight: 131.5 g

Movement: Miyota Calibre 9015
Type: Automatic self-winding
Frequency: 28,800 vph (4 Hz)
Accuracy: In-house regulated to ｰ5～+15 sec/day
Power Reserve: 40~42 hours
Components: 86+
Jewels: 24
Manufacture: Made in Japan

LUXURIOUS AESTHETICS
The Sigma Date Calendar Graphite Black draws the eye with its unique construction, while the classic black dial offers an exceptionally refined aesthetic that highlights its grained textures. The contrast between satin-brushed and mirror-polished steel surfaces further enhances the sleek profile, creating a clean, understated look that defines modern luxury.

GRAPHITE BLACK
Black is always valued for its classic and enduring appeal. The Graphite Black dial is sandblasted to achieve a soft, matte surface that subtly diffuses light. Its openworked hour markers and embossed details further enhance visual depth and legibility, while maintaining a composed, understated aesthetic.

PRECISION ENGINEERED
The Sigma Date Calendar features a premium-grade Miyota Calibre 9015, a self-winding automatic movement with our custom oscillating weight finished in satin-brushed and sandblasted treatments. Fully assembled in Japan, it is one of the thinnest high-beat automatic calibres. Each movement is adjusted in-house across six positions to an accuracy of –5~+15 seconds per day.

LOW-LIGHT BRILLIANCE
The Sigma Date Calendar applies multiple layers of Swiss Grade-A Super-LumiNova® to its hour markers and hands. This meticulous application ensures lasting luminosity, giving the watch a strong presence in low-light conditions.

UNIFIED FORM
Another defining feature is the sleek, seamless flow of multi-faceted steel links, perfectly integrated with the case. Equipped with a quick-release and micro-adjustable system, it ensures a precise, tailored fit and lasting comfort on the wrist.