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UPDATE: 23 OR 24 JEWELS CONFUSION
There is much confusion in the watch community around the caliber 4R35B jewel count. Blogs and watch sellers often refer to the 4R35B as having 24 jewels, this is because that is what Seiko’s official documentation has stated since the tech sheets were published in 2011. Interestingly, the conflicting information in the tech sheet appears to be caused by Seiko combining the calibers 4R35B and 4R36A in one document. The original 4R35A had its own tech sheet. The rotor drawing on the 4R35A shows the caliber number and jewel count spelled out (as it would look on an actual watch), however, the 4R35B/4R36A drawing has a blank rotor without any markings, continuing the cause for confusion.
We have not seen a caliber 4R35B powered watch with rotor markings indicating 24 jewels. The Caliber Corner Community is also backing up the discrepancy in the comments below, so we reached out directly to Seiko for information:
“Dear Seiko, can you please confirm if the 4R35B has 23 or 24 jewels? Tech sheets say the “B” has 24 jewels, but many watches with a 4R35B signed rotor say 23 jewels. Thank you in advance for any clarification you can provide. -Caliber Corner”
Dear Customer,
We have inspected few watches with B movements, and they all state 23 jewels.
Thank you for your feedback, we are in process of correcting that information.
Kind Regards,
SWA
De Caliber Corner.
There is much confusion in the watch community around the caliber 4R35B jewel count. Blogs and watch sellers often refer to the 4R35B as having 24 jewels, this is because that is what Seiko’s official documentation has stated since the tech sheets were published in 2011. Interestingly, the conflicting information in the tech sheet appears to be caused by Seiko combining the calibers 4R35B and 4R36A in one document. The original 4R35A had its own tech sheet. The rotor drawing on the 4R35A shows the caliber number and jewel count spelled out (as it would look on an actual watch), however, the 4R35B/4R36A drawing has a blank rotor without any markings, continuing the cause for confusion.
We have not seen a caliber 4R35B powered watch with rotor markings indicating 24 jewels. The Caliber Corner Community is also backing up the discrepancy in the comments below, so we reached out directly to Seiko for information:
“Dear Seiko, can you please confirm if the 4R35B has 23 or 24 jewels? Tech sheets say the “B” has 24 jewels, but many watches with a 4R35B signed rotor say 23 jewels. Thank you in advance for any clarification you can provide. -Caliber Corner”
Dear Customer,
We have inspected few watches with B movements, and they all state 23 jewels.
Thank you for your feedback, we are in process of correcting that information.
Kind Regards,
SWA
De Caliber Corner.