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Omegamatic caliber
,Pink Gem Pendant  
Omegamatic used Omega caliber 1400 (ETA 205.111 Rhodium plated), 17 jewel autoquartz (not thermocompensated) action with approximately 100 hours power reserve. This caliber has the option of manual winding to obtain the initial power to the capacitor. The mechanism alerts low power reserve by shaking the seconds hand in 4 seconds intervals. The Omega 1400 caliber has a slow date change, which commonly takes around 1.5 hours to change over.
Production of ETA 205.111 began in 1996. It was displaced by ETA 205.911, which replaced the capacitor with a rechargeable battery. Technical documents of 205.111 caliber could be recovered from ETA customer service portal
The capacitor accustomed in Omegamatic watches is a Renata GC920 (9.5 x 1.9 mm 2.4V 0.33F). in the accident of failure due to electrolyte drip, this capacitor could be replaced by a Panasonic MT920 1.5V (ETA MT920/Citizen 298-177) rechargeable power cell. Another compatible rechargeable battery is the Maxell TC920S lithium-ion compartment (Seiko 3023 xxZ).
For other failures, the best option would be getting a watch with a 205.911 caliber (Tissot PR100 autoquartz) and use it for spares. The use of a Swatch autoquartz it is not suggested as these carry the lesser ETA 205.711 15 jewel caliber.
ETA 205.111 technical communication document, in electrical test segment, states that capacitor voltages will fluctuate from 0 apt 2.4V. It too documents that outer power supply tests are apt be scamper with 1.55V (measured with the capacitor in area).In ETA 205.911 technical communication file, Interchangeability (List of stuff) section,links of london watches silver circumstance Eisen, it is listed that the major parts that diverge from 205.111 caliber are Generator (portion not. 20.590.00 for 205.911 and chapter not. 20.515.00 for 205.111) and accumulator (part no. 20.575.00 for 205.911 and part no. 20.802.00 for 205.111 - capacitor). Demo-version of the ETA ONLINE SHOP catalogue the generator for caliber 205.911 (Article no, 04203.205111 (CS) / 251987) as part no. 20.515.00 (the same part number 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 is compatible with Panasonic MT920 (titular voltage of 1.5V). Even whereas MT920 is charted to last 500 charge-discharge cycles, due to lack of official documentation, it is not explicit how long this titanium lithium rechargeable battery will final while used in Omega 1400 caliber.
Operation of Omegamatic mechanisms
An oscillating weight (selfwinding mechanism 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 circuit with energy. Regulated by the quartz, the integrated circuit generates the control signals of the stepper motor which transmits these thrusts to the gear exercise whose cycles and the interlocked hands are exhibiting hours, minutes, seconds and the date.
Caliber 1400 tin charge the capacitor by cornering the cap of the watch. It will necessitate over 40 revolutions ahead the low power indicator stops.
Model message and characteristics
Back of the Omega Seamaster 200 Omegamatic.
Arabic numerals at 12, 6 and 9, and magnified date window at 3.
Water resistant to a highest depth of 200 meters/666 ft.
It has a unidirectional bezel that rotates anti-clockwise with "0-60" scale. It namely useful for anybody kind of amounts, particularly diving periods.
The dark dial edition has silver mathematics with orange signals. It also has silver color frame hands. The silver turntable version has black 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 five holes/notches evenly placed around the back. These are the indentations for the screw-back case opener tool to grip the back chip open and close it.
The bracelet is 18mm wide and it is made of solid links, accordingly no disposed to extending over time. This kind of bracelet is one of the maximum complicated to add alternatively remove links
There is at least one understand special edition of the seamaster 200 omegamatic. There were 1997 units 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 buyer service portal Click "Technical Documents", enter the desired caliber designation, press 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, 205.911 - 25.03.2004 / STAR / 02,Men's Jewelry Market is on the Upswing, 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 comments by Kieron @ watch talk forums
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