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2. Tianjin Seagull - Wikipedia

   en.wikipedia.org/wiki/Tianjin_Seagull

   In 1990, the Tianjin Watch Factory was awarded the status of a national company, and in 1992, the Tianjin Seagull Corporation was founded. That same year, the decision was made to discontinue the production of mechanical watches in favour of quartz watches; five years later it came to a complete reversal of this decision.

3. Miyota (watch movement manufacturer) - Wikipedia

   en.wikipedia.org/wiki/Miyota_(watch_movement...

   Miyota produces various 'standard' and 'premium' grade mechanical movements for automatic wristwatches.. The Miyota 8215 is an entry level non-hacking-earlier versions twenty-one jewel three-hand with date automatic wristwatch movement with a uni-directional winding system (left rotation) with an accuracy of -20 to +40 seconds per day, and a power reserve of over 40 hours.

4. Jewel bearing - Wikipedia

   en.wikipedia.org/wiki/Jewel_bearing

   In modern quartz watches, the timekeeper is a quartz crystal in an electronic circuit, powering a small stepper motor. Because of the small amount of torque needed to move the hands, there is almost no pressure on the bearings and no real gain by using a jewel bearing, hence they are not used in a large proportion of quartz movements.

5. Quartz crisis - Wikipedia

   en.wikipedia.org/wiki/Quartz_crisis

   Quartz movement of the Seiko Astron, 1969. The quartz crisis (Swiss) or quartz revolution (America, Japan and other countries) was the advancement in the watchmaking industry caused by the advent of quartz watches in the 1970s and early 1980s, that largely replaced mechanical watches around the world.

6. Corum (watchmakers) - Wikipedia

   en.wikipedia.org/wiki/Corum_(watchmakers)

   Corum has produced coin watches for over fifty years, with automatic, manual wind or quartz movements. They are available with a $20 Double eagle , $10 or $5 “Liberty” coin for a dial. They are also available with a diamond bezel.

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   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!