Sartory-Billard continues to redefine modern horology with the SB04-E Ghost Silicon, a striking addition to the brand’s experimental Ghost series. Known for its exploration of reflection and invisibility, this collection transforms the way light interacts with watchmaking. The SB04-E Ghost Silicon marks a bold evolution, crafted not from metal but from pure silicon, a material typically found in the microchip industry. Harder than steel yet lighter than aluminum, the silicon dial on the "Radical" full version is polished to a flawless mirror finish, creating a dark, ethereal surface that shifts between shadow and brilliance. It’s an extraordinary fusion of science and art, where technology gives birth to an almost immaterial beauty.

Shop the Silicon & Tantalum editions here.

Each silicon dial is cut and hand-assembled by Armand Billard in the Sartory-Billard workshop, with an astonishing precision of just 0.5 mm in thickness. The result is a hypnotic timepiece that feels both futuristic and meditative, a watch where time is reflected rather than read. The SB04-E Ghost Silicon is available with an integrated rubber strap, as well as a stainless steel bracelet with alternating brushed and polished links, equipped with quick-release pins for easy strap changes, available here.

TECHNICAL SPECIFICATIONS
Calibre
- La Joux-Perret G101
- Tungsten rotor winding mechanism
- 26 mm diameter
- 4.45 height
Functions
Hours, minutes, seconds
Power reserve
68 hours
Jewels
24
Frequency
4 Hz
Case
Polished and brushed steel
Measurements
- 39.5 mm diameter
Water resistance
100 meters
Dial
- Full-mirror polished silicon dial
- Handmade engraving center with a Fume coated outer ring
- Pad printed minute track and Y design in white Super-LumiNova BGW9 lume (emits blue light
Diamond cut indexes and ring between the dial parts
Strap
- Sartory-Billard grey rubber strap


Oster Jewelers is Your Authorized Sartory Billard Retail Partner