Key Specifications: 

Movement type: mechanical. 

Winding method: manual (no automatic winding). 

Number of jewels: 17 ruby jewels. 

Caliber diameter: 24 mm (mounting diameter—24.00 mm, total diameter including lugs—26.45 mm). 

Height (thickness): 3.7 mm. 

Balance frequency: 19,800 half-oscillations per hour (2.75 Hz). 

Power reserve: at least 38 hours. 

Average daily rate: from -20 to +60 seconds per day. 

Balance angle: 42°