Basic Functions: Central hr, Central min, Central sec

Complications:

Date

Case material: Stainless steel

Case size: 40 mm

Thickness: 11.3 mm

Bezel: N/A

Crystal: Sapphire

Caseback: sapphire see-through, AR

BM13-1975A , Baume & Mercier In-house manufacture

Winding type: automatic

Swiss made

120 hours Power Reserve

Accuracy: -4/+6 seconds / day

Frequency - Variations per hour: 4Hz - 28800 V/h

21 jewels

Certification: COSC (-4/+6sec/d)