RM 65-01

The culmination of some five years of development, this automatic split-seconds chronograph is the most complex timepiece ever to leave the Richard Mille workshops. This model fully embodies the brand’s technical approach thanks to the combination of several additional functions, a very specific architecture and an extremely high-end aesthetic. All in all, a fabulous challenge of mechanical watchmaking that called for patience, technicity and utter perseverance.

Movement

• Skeletonised automatic winding movement
• Movement dimensions: 31.78 x 29.98 mm
• Thickness: 8.69 mm
• Jewels: 51
• Balance: Glucydur®, 4 arms, moment of inertia 7.5 mg•cm2, angle of lift 53°
• Frequency: 36,000 vph (5 Hz)
• Balance spring: AK3
• Index assembly: Triovis n° 2

Caliber

• Caliber RMAC4
• Hours, minutes, seconds at 6 o’clock, date, split-seconds chronograph with 30-minute counter at 3 o’clock, 12-hour counter at 9 o’clock, function selector, rapid winding and variable-geometry rotor.
• Power reserve: around 60 hours (± 10%)

Dial

• Skeletonised dial

Case

• Transparent case
• Caseback: In sapphire with anti-glare treatment
• Thickness: 1.2 mm at the center; outer edges 2.04 mm

Strap

• Rubber strap
• Secure deployment clasp