Caliber Corner
calibercorner.com
Caliber Corner
@calibercorner.com
Watch movements: pics, specs and opinions. Enthusiast community for gear turning and caliber learning. Join our mission to spread movement awareness! calibercorner.com
October 29, 2025 at 7:09 PM
October 12, 2025 at 8:25 PM
Opened this watch to verify the caliber and so glad I did!

There was a long hair or fiber right under the balance wheel. This could have jammed up the movement if it got dislodged 🤦‍♂️

PS - This is another reason I'm a fan of exhibition casebacks whenever possible.
October 5, 2025 at 1:54 AM
Miyota caliber 9015 compared with Citizen caliber 9051.

More on calibercorner.com
September 13, 2025 at 5:38 AM
Heuer caliber 12... automatic watch movement calibercorner.com/heuer-calibe...
July 9, 2025 at 4:26 AM
Grand Seiko caliber 9RB2 Spring Drive movement released during Watches and Wonders 2025. Accuracy within +/- 20 seconds per year.

More info: calibercorner.com/grand-seiko-...
April 1, 2025 at 8:05 PM
New caliber listing: Rolex caliber 7135 found in the new Land-Dweller watch introduced in Geneva at Watches & Wonders 2025.

Featuring the new Dynapulse escapement with a Syloxi silicon hairspring. This high-frequency system beats at 36,000 bph / 5 Hz.

calibercorner.com/rolex-calibe...

📸 via Rolex
April 1, 2025 at 2:29 AM
New caliber listing: Breitling caliber B31.https://calibercorner.com/breitling-caliber-b31/
March 28, 2025 at 9:59 PM
March 26, 2025 at 1:16 AM
Seagull 1963 "Red Star" bi-compax mechanical column wheel chronograph powered by a caliber ST19 with 19 zuan (19 jewels), and adorned with a swan neck regulator in blue. This piece pays homage to the original Tianjin Watch Factory military pilot watch from the 1960s. 📸 by @keepthetime.com
March 23, 2025 at 6:55 AM