Caliber R 27 PS

Self-winding with Minute Repeater

Description

Self-winding with Minute Repeater.
This caliber is distinguished by a chime of exceptional sound quality.
It took Patek Philippe extensive research efforts in metallurgy and acoustics to achieve a sound of such perfection and unrivalled purity.
On demand, the minute repeater will strike the hours, the quarter-hours, and the minutes which have elapsed since the last quarter hour.
One hammer strikes the number of hours on a low-pitched gong. Then, two hammers consecutively strike the number of quarter-hours on the low-pitched gong nd the high-pitched gong. Finally, the second hammer strikes the high-pitched gong for a count of the number of minutes that have elapsed since the last quarter hour. It takes the largest number of strikes – 32 in total – to indicate the time at 12:59. Twelve low-pitched strikes, three high-low double strikes, and 14 high strikes.

Technical Specifications

• Balance-wheel: Gyromax
• Geneva Seal Hallmark.
• Diameter: 28.00 mm
• Power reserve: min 38 max 48 hours
• Number of jewels: 39
• Thickness: 5.05 mm
• Case diameter: 38.00 mm