Brand Citizen Watch Caliber Number 8310 (8310A?) Manufacturer Miyota (Citizen) Movement Type Automatic, self-winding mechanical Lignes 11.5”’ Diameter 26mm Height 5.67mm Jewels 21 Beat Rate 21,600 bph Lift Angle 49
421Articles
Brand Breitling Caliber Number B20 In-House? No Base Caliber Tudor MT5612 Movement Type Automatic, self-winding mechanical Chronometer Spec? Yes COSC Certified? Yes Diameter 31.8mm Height 6.5mm Jewels 26 Beat Rate
Brand Timex Caliber Number 02N Manufacturer Miyota Base Caliber Miyota 8215 Movement Type Automatic, self-winding mechanical Lignes 11.5”’ Diameter 26mm Height 5.67mm Jewels 21 Beat Rate 21,600 vph Lift Angle
Brand TAG Heuer Caliber Number Calibre S In-House? No Manufacturer IndTec (aka Soprod) Movement Type Quartz Lignes 13.25”’ Diameter 30.6mm Jewels 27 (has been listed as having 28) Frequency 32,768
This video shows a tour of the Grand Seiko Studio Shizukuishi. Presented by Masayuki Hirota, Editor-in-Chief of Chronos Magazine Japan in February 2021. Also featured in the video is Mr.
Brand NOMOS Glashütte Caliber Number DUW 3001, DUW3001 Movement Type Automatic, Self-winding mechanical In-House? Yes Chronometer Spec? Yes COSC? No Linges 12 3/4”’ Diameter 28.8mm Height 3.2mm thick Rotor Winding
Manufacturer Seiko Epson Caliber Number YN71 Movement Type Automatic, self-winding mechanical Diameter Unconfirmed Height Unconfirmed Jewels 22 Beat Rate 21,600 vph Lift Angle Unconfirmed Power Reserve ~40 hours Accuracy Rating
Manufacturer Seiko Caliber Number 5K65 Movement Type Quartz, solar-powered Diameter Unconfirmed Height Unconfirmed Jewel Count 3 Frequency 32,768Hz Accuracy Rating +/- 15 seconds/month Power Reserve About 9 months on a
Manufacturer Seiko Caliber Number 8229, 8229A Movement Type Quartz, battery powered Outer Diameter 26mm Casing Diameter 24mm Height 3.8mm (not including the battery) Jewels 4 Frequency 32,768Hz Battery Cell SR9365SW
Brand Longines Manufacturer ETA Caliber Number L688.2 Base Caliber A08.L01 In-House? No Movement Type Automatic, self-winding mechanical, chronograph COSC? Yes Lignes 13.25”’ Diameter 30mm Height 7.9mm Jewels 27 Beat Rate
Brand Citizen Manufacturer Miyota (owned by Citizen) Caliber Number 9054 In-House? Yes Movement Type Automatic, self-winding mechanical Lignes 11.5”’ Diameter 26mm Height Unconfirmed Jewels 24 Beat Rate 28,800 vph, 4Hz
Manufacturer Hangzhou Caliber Number 2C10 Base Caliber Seiko 7009A (based on) Movement Type Automatic, self-winding mechanical Lignes 12”’ Height Unconfirmed Jewels Unconfirmed Beat Rate 21,600 bph Lift Angle Unconfirmed Power
Manufacturer ETA Normflatline Caliber Number 955.412, 955412 Replaces 555.115, 955.114 Dimensions 11 1/2”’ (25.6mm) x 2.50mm thick Jewels 7 Frequency 32’768 Hz Battery Cell Number 371 (or 395) Stem 401-906
Manufacturer Hangzhou Watch Factory Caliber Number 2C30 Based On Seiko 7009A Movement Type Automatic, self-winding mechanical Lignes 12”’ Diameter 27mm Height Unconfirmed Jewels Unconfirmed Power Reserve ~36 hours (unconfirmed) Lift
Sources
network of watch sites
