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      SeiyaJapan blog

      Difference between (Grand Seiko Quartz) 9F82 and 9F62

      ・About design for Grand Seiko 9F82
      Grand Seiko 9F83 Quartz (Day/Date) has developed in 1993.
      The design for Grand Seiko 9F82 is as same as one for Grand Seiko
      9F83, except for deleting Day display.

      SBGT035(Day Date) 9F83
      SBGV005  (Date) 9F82

      About a development for 9F62
      Seiko has developed a 9F62 movement which is smaller than 9F82 movement in 1997.
      Because, I think, Seiko believed that man of forty, it's main target must like smaller face watches at that time.
      From the viewpoint of capability, there is no difference between 9F62 and 9F82.

      SBGX005(Date) 9F62
      SBGX009(Non Date) 9F61

      Movement size as a reference
      9F8x : Φ29x26 3.1t
      9F6x : Φ27x26 3.1t 

      ・I recently think that large face watches are mainstream in 2014.
      So you can see some Grand Seiko's using a 9F82.
      They are one of SBGV series watches.

       

      Seiko Watch Co., Ltd has released the first issue of Grand Seiko (GS) Magazine "CNo9"

      Seiko Watch Co., Ltd has released the first issue of Grand Seiko (GS)
      magazine, "CNo 9"  in June 2014.
      "CNo 9" means "Caliber Number 9", 9S(Mechanical) 9R(Springdrive) 9F(Quartz) and it has 32 pages including cover pages.

       

      Contents is  below.

      -Trip report for Shiojiri factory, Seiko Epson Japan where produces GS
      quarts version and spring drives one. There are about 100 watch
      meisters there. One meister can manufacture only 8-10 GS a day because
      9R spring drive consists of more than 270 parts, for example.
      Misters are very proud of making GS.

      -GS's at Baselworld 2014

      -Message from leading watch web site owners to GS.
      DEPLOYA NT, Timezone.com, PuristSPro and Chronos Japan edition.

      -GS user's voice

      -One of GS lovers,  a world class Japanese architecture, Makoto
      Tanijiri travels New York City with his GS.

      -A Recipient of the Pritzker Architecture Prize, Toyoo Ito talks about
      GS and his works.

      -Special photogallery
      SBGJ005, SBGJ010, SBGV009 andSBGA105.

      -Portrait of Hideya Yamazaki, one of the IW misters.

      -The Epoch makers -an astronomical observatory chronometer, 45GSN.

      -Introduction for "GS Master Shop" in your town, Japan.

      About magnetism

      Analog Quartz watches and Springdrive watches are more affected by magnetism than Mechanical watches.

      In fact, Analog Quartz watches move their watch hands using a stepping motor magnet inside.

      So if they receive outside magnetism, the accuracy is worse.

      With regard to Springdrive watches, they use a magnetic brake to control the accuracy. So again, outside magnetism affect their
      accuracy.

      Compared to above two watches, Mechanical watches are tough against magnetism.
      However, they are also affected by magnetism.
      If a hair spring is magnetic, it will not vibrate accurately. Then accuracy will be worse.

      On the contrary, Digital Quarts watches are not affected by magnetic.
      Because they don't use a stepping motor.

      Source: page 22,  SEIKO.ALBA.WIRD Watch Catalog 2007

      pull other springsThen accuracy will be worse.

      Grand Seiko WAKO Special Edition SBGH033 /30pcs

      Wako released about Wako Special Edition Grand Seiko./SBGH033  5/23/2014

       

       

      36000 Hi beat Automatic

      Strap & SS Bracelet

      30 pcs 

      Case size 37mm

      626,400 Yen

      Texture of the dial is the image of a Japanese paper, Washi(和紙)

      Blue steel second hand