Blancpain Aqualung

My beloved little Putin. If I had to keep just one of my current collection, it would probably be this.

Details
Brand: Blancpain
Model: Leman Aqualung Ultra Thin
Reference: 2100-1130A-64B
Year: 2000
Movement: cal. 1151

Dimensions
Diameter: 38mm
Lug to Lug: 43.5mm
Between the Lugs: 20mm
Thickness: 9.5mm