The GRANVELLE CMM.20 is a French-made timepiece featuring a premium mechanical in-house micro-rotor caliber (CMM.20) designed and manufactured by YEMA in Morteau, France. Most other components are sourced from Switzerland within a 70km radius. The watch boasts a timeless design with a small seconds sub-dial at 9 o’clock and a rich guilloché dial with a concentric pattern. The hour markers are delicately carved into the chapter ring. Sleek dauphine-style hands glide across the dial.
The 39mm cushion-shaped case is inspired by the arches of Grandvelle Palace in Besançon and is crafted in brushed stainless steel with polished vertical coin-edge flanks and chamfers, resulting in a slim 8.60mm profile. The cushion-shaped crown is signed with YEMA’s historic “Y.” The ultra-thin micro-rotor movement allows for a slim case design and provides a 70-hour power reserve. The movement features rhodium-plated bridges decorated with a Côtes de Genève sunray pattern and is visible through the sapphire exhibition caseback.
The watch is paired with a premium tapered leather strap with beige stitching and a stainless steel deployant clasp. It comes with two strap end sizes (medium and large) for optimal fit. YEMA offers free worldwide delivery via UPS, a 5-year international warranty, and a 14-day return policy.
Here are the specifications for the GRANVELLE CMM.20:
- Caliber: Micro-Rotor Caliber Manufacture Morteau 20 (CMM.20), self-winding
- Accuracy: -3 / +7 seconds per day
- Power Reserve: 70 hours
- Functions: Hours, minutes, small seconds at 9 o’clock
- Case Material: Vertical brushed 316L stainless steel with polished bevel
- Case Diameter: 39mm
- Case Thickness: 8.60mm
- Lugs: 20mm
- Bezel: Vertical brushed / polished 316L stainless steel
- Crystal: Sapphire crystal with anti-reflective coating (AR)
- Dial: Guilloché with concentric pattern and sunray finish; Carved stainless steel hour markers
- Hands: Stainless steel faceted with polished finish
- Strap: Premium calfskin leather tapered strap with beige stitching; Stainless steel deployant clasp (includes medium and large ends)
- Crown: Polished stainless steel push crown with embossed YEMA logo
- Water Resistance: 5 BAR / 50 m / 165 feet
- Warranty: 5 years international
- Shipping: Free worldwide (end of May 2025 for current orders)
- Price: $1,990.00
More info on Yema’s website.





