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quartz

  1. Member Galleries
    MY COLLECTION Specifications: Model Number: A128-5010 Movement: A128 | Quartz Serial No: 816370 Case: Stainless Steel Strap: Stainless Steel (B340) Water Resistance: 20m Crystal: Mineral Glass Band Width: 20 mm Case Size: 35 mm Thickness: 11 mm Battery: Maxell SR1130W (Silver Oxide)...
  2. WATCHMAKING & TINKERING
    Hi everyone, I am learning about the 7548 and 7C46 movements. I see where some claim the 7C46 is an all metal movement. I have seen one and I know that is not true. Are they confusing the 7548 with the 7C46? Also, why did Seiko replace the 7548 with the 7C46? From what I understand after...
  3. WATCHMAKING & TINKERING
    I apologize if this has been covered before, but I was unable to find anything here. I have a quartz ETA F07.111 movement where the hands shift depending upon the angle of the watch. Only the hour and minute hand shift slightly (say about 30 seconds worth of movement). This doesn't happen when...
  4. WATCHMAKING & TINKERING
    Hi SCWF, A quick question; what lubricants do you use on quartz movements? (Seiko 7548, etc). I've rebuilt a handful of C300s and I've got one that was literally soaked in WD40 that needs servicing (the previous owner sprayed the whole watch "liberally" with it to free up a stuck pusher which...
  5. THE JAPANESE WATCH DISCUSSION FORUM
    Recently got this one after looking all over for one in a decent condition for quite some time. Reading how, for whatever reason, people like to buy birthyear watches I was interested to check watches that were released when I was born. As I was born in the mid of the Quartz crisis (as Swiss...
  6. SEIKO & CITIZEN TRADING POST
    SOLD: Vintage Seiko 7123-823B SQ quartz sport 100. Watch is used and has some marks but is in a very good condition for it's age (1981)! Completely original. Battery is recently renewed, runs great. Crown closes with full turns, bezel rotates free. Lume is still great! Appears to have not been...
  7. SEIKO & CITIZEN TRADING POST
    Up for sale is a very nice vintage Seiko 7t32-7d19 Sports 200 Chronograph/Alarm quartz diver. This watch is in full working order with a brand new battery. The stainless steel case measures about 44mm with crown. The dial is black with three sub-dials. Rotating bezel. Day-date feature...
  8. SEIKO & CITIZEN TRADING POST
    Up for sale is a vintage Seiko 6030-6000 SilverWave quartz diver. Stainless steel case measures 38mm with crown. Black dial. Black rotating bezel. Screw down crown. Stainless bracelet with Seiko-signed clasp. Looks great and runs accurately. Minor scratches and scuffs on crystal and bracelet...
  9. WATCHMAKING & TINKERING
    Attention quartz movement experts: what kind of signaling is coming from the chip on a 7a28 to drive each of the 4 trains? Is it just pulsing the coil in an alternating polarity to ratchet it forward one tick? I'm familiar with larger unipolar steppers like you'd have on a 3D printer, but was...
  10. SEIKO & CITIZEN TRADING POST
    FS: Seiko 8229-602A Pepsi Bezel Quartz Parts/Repairs - $100 Up for sale is a vintage Seiko 8229-602A day-date quartz. This watch is not functioning properly and is being sold for parts or repair. Stainless case measures about 40mm with crown. Rotating Pepsi bezel. Screw down crown (crown is...
  11. Member Galleries
    Hi, my fascination for 1970s digital watches lead to a constantly growing collection of LCD Seikos. At one point I lost overview and decided to take photos, shoot videos and put it all online. Like that me and maybe you can enjoy the virtual collection or even use some of the provided...
  12. SEIKO & CITIZEN TRADING POST
    Up for sale is a vintage Seiko H801-6001 Sports 150 analog/digital quartz watch. This piece functions perfectly and looks almost new. Stainless case measures 44mm with crown. Black dial with digital window. Black rotating bezel. Screw-down crown. Stainless bracelet with Seiko-signed clasp...
  13. SEIKO & CITIZEN TRADING POST
    SOLD: Seiko 7a28-7029 Quartz Chronograph - $225 Up for sale is a vintage gold tone Seiko 7a28-7029 quartz chronograph. Measures 37mm with crown. Gold tone dial. Original gold tone bracelet with Seiko-signed clasp. Scratches on crystal (see photos), and some scuff marks on case and band. Keeps...
  14. THE JAPANESE WATCH DISCUSSION FORUM
    Hi Hoping someone can give me any information/background on a watch I inherited from my dad please? It's a Citizen Quartz Crystron, it has date only (no day of week) and the hours are numerals (1, 2, 3 etc) - I've searched the web and forums and can't find any image which looks similar, all...
  15. SEIKO & CITIZEN TRADING POST
    SOLD: Vintage Timex Red Dot Quartz Diver - $150 OBO Up for sale is a nearly flawless vintage Timex Red Dot quartz diver watch. Stainless case measure about 38mm. Black rotating bezel. Functioning date feature. Screw-down crown. Brand new battery. Includes black rubber strap. Asking price is...
  16. SEIKO & CITIZEN TRADING POST
    SOLD: Seiko 6923-7109 Sports 100 Quartz - $125 obo Up for sale is a vintage Seiko 6923-7109 Sports 100 quartz watch. Dial measures about 42mm with crown. Black dial and bezel (does not rotate). Silver case and bracelet. Functioning day-date feature. Screw-down crown. Seiko-signed clasp. Minor...
  17. SEIKO & CITIZEN TRADING POST
    SOLD: Seiko 5H23-7009 Sports 150 Quartz - $150 OBO Up for sale is a 5H23-7009 Sports 150 quartz watch. Stainless case measures about 39mm with crown. Black dial. Black bi-rotational click bezel. Functioning day-date feature. Screw-down crown. Includes new black nylon strap. Case is in very...
  18. SEIKO & CITIZEN TRADING POST
    Up for sale is a Seiko 7546-603B quartz Sports 100 diver watch. Stainless steel case measures about 38.5mm. Black dial. Aftermarket non-rotating black bezel. Functioning day/date feature. Screw down crown. Crystal has no scratches, case has minimal scuffs. 20mm lug width. Runs great. Includes...
  19. SEIKO & CITIZEN TRADING POST
    SOLD: Seiko 8123-6109 Pepsi Bezel - $115 Up for sale are two vintage Seiko 8123-6109 quartz Sports 100 diver watches. These two watches are the exact same model - one features the stainless steel Seiko bracelet, and the other includes a new black NATO strap. The case on each measure...
  20. SEIKO & CITIZEN TRADING POST
    Up for sale is a vintage Seiko 7A38-7190 quartz chronograph. Stainless steel case measures 37mm with crown. Lovely silver dial. Day-date feature. Original stainless bracelet with Seiko-signed clasp . Minor scratches on crystal. Keeps accurate time. Chronograph functions work correctly. Asking...
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