Basic Functions: Central hr, Central min, Central sec

Complications:

Date

Water resistance: 100m, 10bar

Case material: Stainless steel

Case size: 42.1 mm

Thickness: 10.7 mm

Lug-to-lug distance: 50 mm

Bezel: fixed

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

Dial: Transparent blue sapphire