Breitling Chronomat Blackbird Mens Chronograph Automatic Chronometer A4436010/BB71.BKST

Automatic mechanical movement. Breitling Calibre 44 based on ETA 2892-A2 with automatic winding and hacking seconds. Contains 21 jewels. Pulsation frequency (biting rate) is 28,800 vph. Power reserve approximately 42 hours. Analog dial design featuring black face with white stitching accents. Black leather strap with silver-tone finish trim and white stitching details. Date display located at the 12 o'clock position. Chronograph function driven by automatic mechanical movement; includes three sub-dials: one for seconds (60-second scale), one for minutes (30-minute scale) and one for hours (12-hour scale). Minute markers present on the main dial outer rim. Tachymeter scale integrated around the outer rim of the main dial. Bi-directional rotating bezel with silver-tone stainless steel clucot. Scratch resistant sapphire crystal lens protecting the dial. Screw down winding/crown with safety release system. Solid case back allowing visibility of internal components (movement). Round case shape constructed from silver-tone stainless steel measuring 44mm in width and 17mm in thickness. Band features a fold over clasp mechanism with integrated safety release. Silver-tone finish applied to the stainless steel elements including bezel, pushers, and crown. Strap width is approximately 22 mm. Water resistant up to 300 meters / 1000 feet depth suitable for professional diving use. Chronometer certified chronograph ensuring high precision time measurement. Luxury Swiss made watch adhering to Breitling's premium quality standards.