Omega Seamaster Omegamatic
Encyclopedia
The Omega Seamaster 200 Omegamatic is a midsize automatic quartz
watch that Omega produced from 1997 until 2000. It has stainless steel
case and bracelet (Bond style with gold Omega symbol clasp), screw-in crown and caseback, engraved with the Omega Hippocamp
logo, 200 meters water resistant, unidirectional bezel, silver or black dial with orange accents, sapphire crystal (anti-reflective
) with magnifying
(cyclops) date window, case diameter 36mm, 2.4V capacitor
(Renata GC920), rotor charging micro generator
, quartz
controlled stepper motor
and quickset date function.
Omega reference: 2514.50.00 (black dial) and 2514.30.00 (silver dial)
1400 (ETA 205.111 Rhodium
plated), 17 jewel
autoquartz
(not thermocompensated) movement
with around 100 hours power reserve
. This caliber has the option of manual winding to get the initial power to the capacitor
. The mechanism alerts low power reserve by moving the seconds hand in four seconds intervals. The Omega 1400 caliber has a slow date change, which usually takes approximately 1.5 hours to change over.
Production of ETA 205.111 started 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 It was superseded by ETA 205.911, which replaced the capacitor with a rechargeable battery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 leak, 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 cell
(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 recommended as these carry the inferior ETA 205.711 15 jewel caliber.
ETA 205.111 technical communication document, in electrical test section, states that capacitor voltages will fluctuate from 0 to 2.4V. It also documents that external power supply tests are to be run with 1.55V (measured with the capacitor in place).In ETA 205.911 technical communication document, Interchangeability (List of material) section, it is listed that the major parts that differ from 205.111 caliber are Generator (part no. 20.590.00 for 205.911 and part no. 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 list 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 (nominal voltage of 1.5V). Even though MT920 is designed to last 500 charge-discharge cycles, due to lack of official documentation, it is not clear how long this titanium lithium rechargeable battery will last when used in Omega 1400 caliber.
mechanism in a traditional watch) transmits the mechanical energy to the micro generator
through the microbarrel. The generator converts this mechanical energy into electrical energy and stores it in an 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 impulses to the gear train whose wheels and the connected hands are displaying hours, minutes, seconds and the date.
Caliber 1400 can charge the capacitor by turning the crown of the watch. It will require over 40 revolutions before the low power indicator stops.
Automatic quartz
Automatic quartz is a collective term describing watch movements that combine a self-winding rotor mechanism to generate electricity with a piezoelectric quartz crystal as its timing element. Such movements aim to provide the advantages of quartz without the environmental impact of batteries...
watch that Omega produced from 1997 until 2000. It has stainless steel
Stainless steel
In metallurgy, stainless steel, also known as inox steel or inox from French "inoxydable", is defined as a steel alloy with a minimum of 10.5 or 11% chromium content by mass....
case and bracelet (Bond style with gold Omega symbol clasp), screw-in crown and caseback, engraved with the Omega Hippocamp
Hippocamp
The hippocamp or hippocampus , often called a sea-horse in English, is a mythological creature shared by Phoenician and Greek mythology, though the name by which it is recognised is purely Greek; it became part of Etruscan mythology...
logo, 200 meters water resistant, unidirectional bezel, silver or black dial with orange accents, sapphire crystal (anti-reflective
Anti-reflective coating
An antireflective or anti-reflection coating is a type of optical coating applied to the surface of lenses and other optical devices to reduce reflection. This improves the efficiency of the system since less light is lost. In complex systems such as a telescope, the reduction in reflections also...
) with magnifying
Magnifying glass
A magnifying glass is a convex lens that is used to produce a magnified image of an object. The lens is usually mounted in a frame with a handle ....
(cyclops) date window, case diameter 36mm, 2.4V capacitor
Capacitor
A capacitor is a passive two-terminal electrical component used to store energy in an electric field. The forms of practical capacitors vary widely, but all contain at least two electrical conductors separated by a dielectric ; for example, one common construction consists of metal foils separated...
(Renata GC920), rotor charging micro generator
Electrical generator
In electricity generation, an electric generator is a device that converts mechanical energy to electrical energy. A generator forces electric charge to flow through an external electrical circuit. It is analogous to a water pump, which causes water to flow...
, quartz
Crystal oscillator
A crystal oscillator is an electronic oscillator circuit that uses the mechanical resonance of a vibrating crystal of piezoelectric material to create an electrical signal with a very precise frequency...
controlled stepper motor
Stepper motor
A stepper motor is a brushless, electric motor that can divide a full rotation into a large number of steps. The motor's position can be controlled precisely without any feedback mechanism , as long as the motor is carefully sized to the application...
and quickset date function.
Omega reference: 2514.50.00 (black dial) and 2514.30.00 (silver dial)
Omegamatic caliber
Omegamatic used Omega caliberCaliber (horology)
Caliber: at the beginning the denomination indicated only the size of a watch movement.Today, caliber designs a precise movement type, indicating the size, the style , followed by the mark of the Ebauches manufacturer Caliber: at the beginning the denomination indicated only the size of a watch...
1400 (ETA 205.111 Rhodium
Rhodium
Rhodium is a chemical element that is a rare, silvery-white, hard and chemically inert transition metal and a member of the platinum group. It has the chemical symbol Rh and atomic number 45. It is composed of only one isotope, 103Rh. Naturally occurring rhodium is found as the free metal, alloyed...
plated), 17 jewel
Jewel bearing
A jewel bearing is a plain bearing in which a metal spindle turns in a jewel-lined pivot hole. The hole is typically shaped like a torus and is slightly larger than the shaft diameter. The jewel material is usually synthetic sapphire...
autoquartz
Automatic quartz
Automatic quartz is a collective term describing watch movements that combine a self-winding rotor mechanism to generate electricity with a piezoelectric quartz crystal as its timing element. Such movements aim to provide the advantages of quartz without the environmental impact of batteries...
(not thermocompensated) movement
Movement (clockwork)
In horology, a movement is the internal mechanism of a clock or watch, as opposed to the case, which encloses and protects the movement, and the face which displays the time. The term originated with mechanical timepieces, whose movements are made of many moving parts...
with around 100 hours power reserve
Power reserve
Power Reserve Indicator is a complication of the watch, which is designed to show the amount of remaining stored energy. The power reserve indicator indicates the tension on the mainspring at any particular moment.-Overview:...
. This caliber has the option of manual winding to get the initial power to the capacitor
Capacitor
A capacitor is a passive two-terminal electrical component used to store energy in an electric field. The forms of practical capacitors vary widely, but all contain at least two electrical conductors separated by a dielectric ; for example, one common construction consists of metal foils separated...
. The mechanism alerts low power reserve by moving the seconds hand in four seconds intervals. The Omega 1400 caliber has a slow date change, which usually takes approximately 1.5 hours to change over.
Production of ETA 205.111 started in 1996. It was superseded by ETA 205.911, which replaced the capacitor with a rechargeable battery
Rechargeable battery
A rechargeable battery or storage battery is a group of one or more electrochemical cells. They are known as secondary cells because their electrochemical reactions are electrically reversible. Rechargeable batteries come in many different shapes and sizes, ranging anything from a button cell to...
. 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 leak, this capacitor could be replaced by a Panasonic
Panasonic
Panasonic is an international brand name for Japanese electric products manufacturer Panasonic Corporation, which was formerly known as Matsushita Electric Industrial Co., Ltd...
MT920 1.5V (ETA MT920/Citizen
Citizen Watch Co.
is the core company of a Japanese global corporate group based in Tokyo, Japan. The company was originally founded as Shokosha Watch Research Institute in 1918 and is currently known as the manufacturer of CINCOM precision lathe machine tools as well as CITIZEN watches. The trade name originated...
298-177) rechargeable battery. Another compatible rechargeable battery is the Maxell
Maxell
, commonly known as Maxell, is a Japanese company which manufactures consumer electronics. The company's notable products are batteries -- the company's name is a contraction of "maximum capacity dry cell" -- and recording media, including audio cassettes and blank VHS tapes, and recordable optical...
TC920S lithium-ion cell
Button cell
A watch battery or button cell is a small single cell battery shaped as a squat cylinder typically 5 to 12 mm in diameter and 1 to 6 mm high—like a button on a garment, hence the name. Button cells are used to power small portable electronics devices such as wrist watches, pocket...
(Seiko
Seiko
, more commonly known simply as Seiko , is a Japanese watch company.-History and ongoing developments:The company was founded in 1881, when Kintarō Hattori opened a watch and jewelry shop called in the Ginza area of Tokyo, Japan. Eleven years later, in 1892, he began to produce clocks under the...
3023 xxZ).
For other failures, the best option would be getting a watch with a 205.911 caliber (Tissot
Tissot
Tissot is a luxury Swiss watchmaker company founded in 1853 by Charles-Félicien Tissot and his son Charles-Émile Tissot who established the Tissot factory in the Swiss city of Le Locle, in the Neuchâtel area of the Jura Mountains....
PR100 autoquartz) and use it for spares. The use of a Swatch
Swatch
Swatch is a brand name for a line of wrist watches from the Swatch Group, a Swiss conglomerate with vertical control of the production of Swiss watches and related products...
autoquartz it is not recommended as these carry the inferior ETA 205.711 15 jewel caliber.
ETA 205.111 technical communication document, in electrical test section, states that capacitor voltages will fluctuate from 0 to 2.4V. It also documents that external power supply tests are to be run with 1.55V (measured with the capacitor in place).In ETA 205.911 technical communication document, Interchangeability (List of material) section, it is listed that the major parts that differ from 205.111 caliber are Generator (part no. 20.590.00 for 205.911 and part no. 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 list 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 (nominal voltage of 1.5V). Even though MT920 is designed to last 500 charge-discharge cycles, due to lack of official documentation, it is not clear how long this titanium lithium rechargeable battery will last when used in Omega 1400 caliber.
Operation of Omegamatic mechanisms
An oscillating weight (selfwindingAutomatic watch
An automatic or self-winding watch is a mechanical watch, whose mainspring is wound automatically by the natural motion of the wearer's arm, providing energy to run the watch, to make it unnecessary to manually wind the watch. A watch which is not self-winding is called a manual watch...
mechanism in a traditional watch) transmits the mechanical energy to the micro generator
Electrical generator
In electricity generation, an electric generator is a device that converts mechanical energy to electrical energy. A generator forces electric charge to flow through an external electrical circuit. It is analogous to a water pump, which causes water to flow...
through the microbarrel. The generator converts this mechanical energy into electrical energy and stores it in an accumulator (Capacitor
Capacitor
A capacitor is a passive two-terminal electrical component used to store energy in an electric field. The forms of practical capacitors vary widely, but all contain at least two electrical conductors separated by a dielectric ; for example, one common construction consists of metal foils separated...
for caliber 1400).
The accumulator supplies the integrated circuit with energy. Regulated by the quartz
Quartz clock
A quartz clock is a clock that uses an electronic oscillator that is regulated by a quartz crystal to keep time. This crystal oscillator creates a signal with very precise frequency, so that quartz clocks are at least an order of magnitude more accurate than good mechanical clocks...
, the integrated circuit
Integrated circuit
An integrated circuit or monolithic integrated circuit is an electronic circuit manufactured by the patterned diffusion of trace elements into the surface of a thin substrate of semiconductor material...
generates the control signals of the stepper motor
Stepper motor
A stepper motor is a brushless, electric motor that can divide a full rotation into a large number of steps. The motor's position can be controlled precisely without any feedback mechanism , as long as the motor is carefully sized to the application...
which transmits these impulses to the gear train whose wheels and the connected hands are displaying hours, minutes, seconds and the date.
Caliber 1400 can charge the capacitor by turning the crown of the watch. It will require over 40 revolutions before the low power indicator stops.
Model information and characteristics
- Arabic numeralsArabic numeralsArabic numerals or Hindu numerals or Hindu-Arabic numerals or Indo-Arabic numerals are the ten digits . They are descended from the Hindu-Arabic numeral system developed by Indian mathematicians, in which a sequence of digits such as "975" is read as a numeral...
at 12, 6 and 9, and magnified date 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 any kind of measures, especially diving times.
- The black dial version has silver numbers with orange markers. It also has silver color skeleton hands. The silver dial version has black skeleton hands.
- The Omega Seamaster 200 Omegamatic use screw-down crown for a tight water sealWater sealWater seal may refer to:*Liquid trap seal in plumbing traps*Underwater seal in pleural drainage apparatuses*Waterproofing...
. - 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 piece open and close it.
- The bracelet is 18mm wide and it is made of solid links, therefore not prone to stretching over time. This kind of bracelet is one of the most difficult to add or remove links
- There is at least one know special edition of the seamaster 200 omegamatic. There were 1997 units produced in a case that resembled a diver’s tank.
See also
- Automatic quartzAutomatic quartzAutomatic quartz is a collective term describing watch movements that combine a self-winding rotor mechanism to generate electricity with a piezoelectric quartz crystal as its timing element. Such movements aim to provide the advantages of quartz without the environmental impact of batteries...
- Diving watchDiving watchA diving watch is a watch designed for underwater diving that features, as a minimum, a water resistance greater than , the equivalent of . The typical diver's watch will have a water resistance of around , though modern technology allows the creation of diving watches that can go much deeper...
- Water resistant watchWater Resistant markWater Resistant is a common mark stamped on the back of wrist watches to indicate how well a watch is sealed against the ingress of water. It is usually accompanied by an indication of the static test pressure that a sample of newly manufactured watches were exposed to in a leakage test...