Paying tribute to Blancpain's original women's watch Celebrating the 70th anniversary of the Ladybird collection, Blancpain pays tribute to the 1956 Ladybird Bullet. This historic feminine timepiece was created by Blancpain, under the helm of CEO Betty Fiechter, the first woman to lead a Swiss watchmaking house. The Ladybird Bullet was a horological landmark featuring the world’s smallest round movement. Today’s Blancpain Lady B continues Blancpain’s mechanical miniaturization legacy. Specifications Manufacture Caliber 615 Automatic Power Reserve: 38 hours Case: Stainless Steel Dial: Opaline Calf leather 'wrap' strap with stainless steel pin buckle (interchangeable) Engraved caseback Case Diameter: 19.00mm Water Resistance: 3 bar Case Thickness: 14.9mm thick Between Horns: 10.00mm