The Breitling B01 Chronograph 42 is a luxury watch that relies on a fully automatic in-house movement, featuring the following technical specifications [1, 2]: Technical Specifications: Movement: In-house Breitling Caliber 01, mechanical automatic movement, COSC certified chronometer [1, 2]. Power Reserve: Approximately 70 hours. Case Diameter: 42 mm [1, 2]. Case Thickness: 13.65 mm (may vary slightly depending on the collection, such as Chronomat or Premier). Water Resistance: Up to 100 meters (10 bar) for the Premier collection, and up to 200 meters (20 bar) for the Chronomat collection [1, 2]. Crystal: Scratch-resistant and anti-reflective sapphire crystal on both sides. Material: Stainless Steel, with luxury versions available in 18-karat Red Gold. Movement Type: Automatic Features: Water Resistant Watch Size: 42mm Material: Stainless Steel