Caliber R TO 27 QR SID LU CL

Manual Winding movements

DESCRIPTION

Manual Winding movements

As the name implies, these movements are wound by turning the crown. The tensioned mainspring drives the wheels inside the watch as it gradually relaxes. Whether ultra thin, cut-away “skeleton”, simple or complicated, the manually wound movement is greatly appreciated by aficionados of traditional watchmaking.

Technical data

• Minute repeater with tourbillon escapement
• Dial side: Perpetual calendar with retrograde date hand
• Hours and minutes of mean solar time
• Day, month, leap year by hands
• Moon age
• Reverse side: sidereal time, sky chart, phase and orbit of the Moon
• Overall diameter: 38 mm
• Height: 12.61 mm
• 55 jewels, 24 bridges
• Balance: Gyromax
• Vibrations per hour: 21'600
• Power reserve: 48 h max.
• Number of parts: 686
• C.O.S.C. certificate
• Patent CH 688171
• Flywheel
• Chime on two “cathedral” gongs
• Slide mechanism integrated in movement
• Third wheel in gold