ETA MT920/Citizen 298-177

Omegamatic caliber
Omegamatic used Omega caliber 1400 (ETA 205.111 Rhodium plated), 17 jewel autoquartz (not thermocompensated) campaign with around 100 hours power keep. This caliber has the option of manual winding to get the initial power to the capacitor. The mechanism alerts low power reserve by shaking the seconds hand in four seconds intervals. The Omega 1400 caliber has a slow date alteration, which usually takes nearly 1.5 hours to change over.
Production of ETA 205.111 began in 1996. It was superseded by ETA 205.911, which replaced the capacitor with a rechargeable battery. Technical documents of 205.111 caliber could be retrieved from ETA customer service portal
The capacitor used in Omegamatic watches is a Renata GC920 (9.5 x 1.9 mm 2.4V 0.33F). in the event of failure due to electrolyte drip,Horseshoe Pendant  , this capacitor could be replaced by a Panasonic MT920 1.5V (ETA MT920/Citizen 298-177) rechargeable battery. Another compatible rechargeable battery is the Maxell TC920S lithium-ion compartment (Seiko 3023 xxZ).
For additional failures, the best adoption would be obtaining a watch with a 205.911 caliber (Tissot PR100 autoquartz) and use it for leftovers. The use of a Swatch autoquartz it is not suggested as these carry the minor ETA 205.711 15 gem caliber.
ETA 205.111 technical communication file, in electrical test section, states namely capacitor voltages will fluctuate from 0 to 2.4V. It too documents namely outer power afford tests are to be sprint with 1.55V (measured with the capacitor in location).In ETA 205.911 technical communication document, Interchangeability (List of matter) section, it is listed namely the important parts that dissimilar from 205.111 caliber are Generator (part not. 20.590.00 because 205.911 and part no. 20.515.00 for 205.111) and accumulator (part no. 20.575.00 because 205.911 and part no. 20.802.00 for 205.111 - capacitor). Demo-version of the ETA ONLINE SHOP menu the generator for caliber 205.911 (Article no, 04203.205111 (CS) / 251987) as part no. 20.515.00 (the same part digit for caliber 205.111) and it specifically mentions that it is compatible with calibers 1400 B, 205.911 C and 205.911 E.
Omega caliber 1400 namely compatible with Panasonic MT920 (titular voltage of 1.5V). Even though MT920 is charted to final 500 charge-discharge cycles, due to absence of official documentation, it is no explicit how long this titanium lithium rechargeable power cell will last when secondhand in Omega 1400 caliber.
Operation of Omegamatic mechanisms
An oscillating heaviness (selfwinding machinery in a traditional watch) transmits the mechanical energy to the mini generator via the microbarrel. The generator converts this mechanical energy into electrical energy and stores it in one accumulator (Capacitor for caliber 1400).
The accumulator supplies the integrated perimeter with energy. Regulated by the quartz,Fruity Apple Mini Pendant, the integrated circle generates the control markers of the stepper motor which transmits these thrusts to the gear practice whose wheels and the interlocked hands are exhibiting hours, minutes, seconds and the date.
Caliber 1400 tin dictate the capacitor along cornering the cap of the watch. It will necessitate over 40 revolutions ahead the cheap power arrow stops.
Model message and specifics
Back of the Omega Seamaster 200 Omegamatic.
Arabic numerals at 12, 6 and 9, and magnified appointment window at 3.
Water resistant to a maximum depth of 200 meters/666 ft.
It has a unidirectional bezel that rotates anti-clockwise with "0-60" scale. It is useful for anybody kind of measures, particularly diving times.
The dark dial edition has silver mathematics with orange signals. It also has silver color skeleton hands. The silver dial version has dark skeleton hands.
The Omega Seamaster 200 Omegamatic use screw-down crown for a firm water seal.
This watch has a screw-in back. It has a series of 5 holes/notches evenly placed nigh the back. These are the indentations for the screw-back circumstance opener tool to grip the back chip open and near it.
The bracelet is 18mm wide and it is made of solid correlates, accordingly not disposed to extending over time. This kind of bracelet is one of the maximum tough to add alternatively remove links
There is by least an know special version of the seamaster 200 omegamatic. There were 1997 elements produced in a case that resembled a diver tank.
See also
Automatic quartz
Diving watch
Water resistant watch
References
^ 1793-2002 history of ETA
^ ETA customer service portal Click "Technical Documents", enter the lusted caliber nomination, click aboard the earch clasp.
^ Panasonic Titanium lithium rechargeable batteries MT920
^ CT_205_111_FDE_01.PDF, 205.111 - 25.11.1997 / STAR / 01, Pages 6 to 7
^ CT_205_911_FDE_02.PDF,Returning behind apt the award topic, 205.911 - 25.03.2004 / STAR / 02, Page 2
^ Demo-version of the ETA ONLINE SHOP
^ Panasonic: LITHIUM - Manganese Titanium Lithium Rechargeable
^ Watches-Lexic Technique
^ Chronocentric: OMEGA Bracelets and Straps
^ Pictures and remarks by Kieron @ watch speak forums
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