The Masterlink Perpetual Calendar Sapphire redefines the modern luxury perpetual calendar watch through a striking balance of architectural design and high-complication watchmaking. Its openworked sappghire dial provides a transparent view into the architectural moments of the movement, while enhancing legibility across the day, date, month, leap year, and moonphase displays. The asymmetrical three-counter layout introduces a fresh approach to dial ergonomics, delivering clarity without sacrificing visual impact. Housed in a lightweight Grade 5 titanium case, this Swiss luxury timepiece offers 100m water resistance and a sleek, ultra-thin profile, making it a rare example of a high complication sports watch designed for everyday wear.

Pre-order now for delivery in late May/early June 2026.
Ref. ML11.0-TNBR-TNSB-SP31PS-TNDP

At its core is the in-house GCA11000 automatic calibre, an ultra-thin movement with micro-rotor engineered for long-term precision exceeding a century. This advanced mechanical movement integrates a full perpetual calendar complication into a refined, contemporary format, combining performance with aesthetic harmony. The titanium bracelet, crafted with a mix of brushed, polished, and Darkblast finishes, ensures durability while maintaining exceptional comfort through ergonomic design and micro-adjustment capability. With its fusion of innovation, symmetry-breaking design, and elite Swiss craftsmanship, the Masterlink Perpetual Calendar stands as a bold statement for those seeking a cutting-edge perpetual calendar wristwatch with uncompromising technical depth.


TECHNICAL SPECIFICATIONS
Calibre
- GCA11000
- An ultra-thin Maestro-shaped movement with an offset micro-rotor and three-counter display, elegantly integrating a highly legible grand date
Functions
- Hours, minutes, day, date, month, leap year, moonphase
Power Reserve
50 hours
Frequency
3 Hz
Components
306
Jewels
29 rubies Incabloc® shock protection
Case
Grade 5 titanium with see-thru caseback
Measurements
- 40.00 mm width
- 40.00 mm length
- 10.00 mm thickness
Crown
Screw-down crown with Clous de Paris motif and pyramid shape
Construction
- Carved with CNC numeric control machinery
- Asymmetric polygon with smooth edges
Water resistance
100m
Parts
33 pieces
Finishing
Darkblast, brushed, and polished finish
Dial
- Open worked sapphire dial
- Shaped transparent construction revealing the entire Maestro movement
Bracelet
- Bracelet exclusively developed in-house proporietary design by Gerald Charles
- Grade 5 titanium
- Darkblast, vertical brushed, and polished finishes
- Folding clasp with GC engraving, deployante with hidden pushers


Oster Jewelers is Your Authorized Gerald Charles Retail Partner