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Omega cal. 321 movement. The Speedmaster was not originally designed for space exploration. Instead, it was introduced in 1957 as a sport and racing chronograph following on from the early chronographs of the 1920s and 1930s, including the Omega 28.9 chronograph, which was Omega's first small wrist chronograph, complementing Omega's position as the official timekeeper for the Olympic Games.
The watches have a 42-millimetre (1.5 in) diameter and 13-millimetre (0.5 in) thickness, and Super-LumiNova for the indexes and hands, which is the same lume as that used in the Omega Speedmaster. It has a quartz ETA G10.212 movement .
ETA Mechanical movements Caliber Product Line Winding Diameter Height Jewels Frequency Running time VPH Hz; 2671 [1] Mecaline automatic 17.2 4.8 25 28800 4 38 2678 [2] Mecaline automatic 17.2 5.35 25 28800 4 38 2000-1 [3] Mecaline Specialities automatic 19.4 3.6 20 28800 4 40 2681 [4] Mecaline automatic 19.4 4.8 25 28800 4 38 2094 [5]
The movement was a modular design and components were manufactured by individual companies (such as Omega who made the micro motor) and then assembled at three workshops. [ 4 ] The beta 21 watches had a sweeping second hand, which moved smoothly round the dial and ‘hummed’ thanks to the Omega vibrating micro motor.
Omega Seamaster Omegamatic; Omega Speedmaster This page was last edited on 28 March 2023, at 15:24 (UTC). Text is available under the Creative Commons ...
Thus, based upon the movements used by Rolex, Breitling, and Omega, the movement calibers that obtain most of the COSC certificates [5] are the Rolex 3135 [6] (since 1988) (and variants 3155, 3175, 3185, 4130) and 2235, the ETA 2892A2 [7] (and variants) and Valjoux 7750, [8] each of which operates at 28,800 beats per hour.
The first co-axial movement to be brought to the public was the Omega cal. 2500, with different variations being listed as A, B, C, and D. This movement was built from the Omega "in-family" cal. 1120 (finished chronometer grade ETA 2892-A with two extra jewels) A, B, and C are similar two-tier co-axial movements, but C is the first version to ...
The movement parts are separated into two main categories: those belonging to the ébauches and those belonging to the assortments. [ 2 ] In watch movements the wheels and other moving parts are mounted between two plates, which are held a small distance apart with pillars to make a rigid framework for the movement.