The Sartory-Billard SB04-E Shanga is a limited-edition Swiss automatic watch that brings together independent watchmaking, traditional Tanzanian craftsmanship, and a commitment to sustainability. Limited to just 100 individually numbered pieces, this distinctive 39.5 mm stainless steel watch features a deep blue dial handcrafted from recycled glass by the artisans of Shanga in Arusha, Tanzania. Each dial reveals its own natural swirls, tonal variations, and subtle differences in transparency, making every watch unique. The project transforms discarded glass bottles collected from Elewana’s lodges and camps into an unexpected material for fine watchmaking, with the glass carefully melted, colored, and shaped by hand before being precision-cut for the dial. Traditional Maasai spears inspired the distinctive watch hands, while the applied numerals feature the individual handwriting of people who contributed to the collaboration, creating a personal design shaped by many hands. Alternating polished and brushed finishes complete the stainless steel case, while a blue leather strap and matching crown complement the rich color of the glass.
Pre-Order now for delivery in December
Ref. SB04-ESHG2026
Powering the Sartory-Billard SB04-E Shanga is a Swiss-made La Joux-Perret G101A automatic movement with an impressive 68-hour power reserve. Measuring 10.2 mm thick with a 44 mm lug-to-lug length, the watch combines distinctive independent design with practical everyday performance, including 100-meter water resistance. The crown is available in deep blue lacquer or, in very limited quantities on a first-come, first-served basis, set with tanzanite. The caseback carries the Shanga logo and the workshop’s Be kind · Recycle motto, reinforcing the purpose behind this special collaboration. Beyond its recycled glass dial, the SB04-E Shanga creates a direct and lasting impact: Sartory-Billard will donate €1,000 to Shanga for every watch sold, supporting artisan training, new equipment, expanded facilities, and employment opportunities for people with disabilities. More than a collectible limited-edition watch, the SB04-E Shanga demonstrates how sustainable materials, social inclusion, and fine Swiss watchmaking can come together in one meaningful timepiece.
TECHNICAL SPECIFICATIONS
Calibre
Swiss made La Joux-Perret G101A automatic movement
Functions
Hours, minutes, seconds
Power reserve
68 hours
Frequency
4 Hz
Case
Stainless steel with alternating polished and brushed finishes
Measurements
39.5 mm diameter
Water resistance
100 meters
Crown
Deep blue lacquered crown with Sartory-Billard logo. Tanzanite-set crown available in very limited quantities
Dial
Deep blue recycled glass dial made at Shanga, with a naturally swirling pattern and subtle variations in tone and transparency
Strap
- Sartory-Billard blue leather strap with logo pin buckle
Limited edition
26 pieces
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