imagenes gratisSimilar to caliber MT 5621, which was launched this time last year in the North Flag, the MT 5601, is automatic, beats at 4Hz, has 28 jewels, and boasts a 70-hour power reserve. Moreover, it uses a silicon balance spring and has a variable inertia balance wheel, with a traversing balance bridge which makes the regulator assortment more robust. The difference, between this movement and what powers the North Flag, is that the Black Bay movement lacks a power reserve indicator, date, and is slightly bigger (to better complment the new 43 mm Bronze case).
