Auris III · 2026 Edition
TERRA
Starting from
CHF 19,800
Edition
250 pcs.
"Built for those who demand their tools to be as uncompromising as their ambitions."
42mm
Case Diameter
200m
Water Resistance
72h
Power Reserve
GMT
Complication
Technical Data
Every detail.
Accounted for.
The Terra is engineered to exacting tolerances. Below is the complete technical specification for reference AU-3-TGR-2026.
Calibre A-3
The art of
movement.
The Calibre A-3 is a manufacture movement developed entirely in-house at our Carouge atelier. Hand-assembled over 200 hours, its variable inertia balance wheel and silicon alloy spring deliver chronometer-grade accuracy across every altitude and climate the Terra encounters. The GMT complication reads two time zones simultaneously via a secondary hand and 24-hour disc.
312
Components
27
Jewels
28,800
Vibrations/hr
±2s
Daily precision
Composition
What it is
made of.
Titanium Grade 5
ASTM F13645% lighter than steel and impervious to corrosion. The exterior alternates between sandblasted matte and mirror-brushed finishes — each transition shaped entirely by hand.
Sapphire Crystal
630 VickersMonocrystalline sapphire at 9.0 on the Mohs scale. Both surfaces receive our proprietary anti-reflective treatment for perfect legibility at any angle of light.
18k Rose Gold
750 / 1000Bezel insert, crown, and deployant clasp hand-finished in 750-grade rose gold. Each component passes through fourteen stages of polishing before assembly.
Silicon Balance Spring
AntimagneticOur A-3 movement employs a silicon alloy spring impervious to magnetic fields exceeding 1,500 Gauss — ensuring accuracy wherever the Terra takes you.
Private Atelier
Reserve your
Terra.
With 250 pieces produced each year, the Terra is allocated on a priority basis. Our Geneva atelier will respond within 48 hours.