Brand Citizen Caliber Number 7730 Movement Type Automatic, self-winding mechanical Base Caliber Citizen 7700 Diameter 28mm Height 4.86mm Jewel Count 26 Beat Rate 36,000 vph Lift Angle 48 degrees Power
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Manufacturer Sellita Caliber Number SW221-1, SW 221-1 Movement Type Automatic, self-winding mechanical Base Caliber Sellita SW200-1 Lignes 11.5”’ Overall Diameter 26mm Casing Diameter 25.60mm Height 5.05mm thick Jewels 26 Power
Manufacturer Seagull Caliber Number ST6, TY6D1K, TY6XX Movement Type Automatic, self-winding mechanical Diameter 19.8mm Height Depends on version Jewels 17 Beats per hour 21,600 vph, 3Hz Power Reserve > 36
Manufacturer Seagull Caliber Number TY-2706, TY2706, ST1701, ST17 Base Caliber ST16 Movement Type Automatic, self-winding mechanical Lignes 11.5”’ Diameter 26mm Height 4.65mm Jewels 20 Beats per hour 21,600 vph, 3Hz
Brand Citizen Caliber Number 8229, 8229A Manufacturer Miyota In-House? Yes (Citizen owns Miyota) Movement Type Automatic, self-winding mechanical Lignes 11.5”’ Diameter 26mm Height 5.67mm Jewels 21 Vibrations Per Hour 21,600
On December 17, 2020, Sellita published an R&D technical commutation / specific information sheet (No. 25) with regards to “Optimization barrel SW3XX-1” aka the RDM+ barrel. In Sellita’s own words:
Brand Bell & Ross Caliber Number BR-CAL 302, BR-302 In-House? No Base Caliber Sellita SW300-1 Movement Type Automatic, self-winding mechanical Lignes 11.5”’ Diameter 25.6mm Height 3.6mm thick Jewels 25 Vibrations
Brand Ulysse Nardin Caliber Number UN-816, UN816 In-House? No Base Caliber Sellita SW300-1 Movement Type Automatic, self-winding mechanical Lignes 11.5”’ Diameter 26.5mm Height 3.6mm Jewel Count 25 Beat Rate 28,800
Manufacturer S. Epson (Seiko) Caliber Number YN56 (aka YN56A) Movement Type Automatic, self-winding mechanical Lignes 12.1”’ Diameter 27.4mm Height 5.32mm Jewels 22 Beat Rate 21,600 bph Lift Angle 52 degrees
Manufacturer ETA Caliber Number 2842 Movement Type Automatic, self-winding mechanical Lignes 11.5”’ Diameter 26mm Height 4.7mm Jewel Count 21 (date version have 23) Beat Rate 21,600 vph Lift Angle 50
Manufacturer ETA Caliber Number 805.112, 805112 Movement Type Quartz, battery-powered Lignes 11.5”’ Diameter 25.6mm Height 3.65mm (3.7mm including battery) Jewel Count 0 Frequency 32,768 Hz Battery Cell 377 Battery Life
PTS Resources (partner with Hangzhou Watch Company), is based in Hong Kong with offices in Shenzhen and Guangzhou. Made in China watch movements are painstakingly difficult to research and organize.
Brand Citizen Watch Co. Caliber Number B612, B612A Manufacturer Miyota (owned by Citizen) Movement Type Quartz, solar-powered Lignes Unconfirmed Diameter Unconfirmed Height Unconfirmed Jewel Count No jewels (0) Frequency 32,768
Brand Junghans Caliber Number J800.1 Base Caliber ETA 2824-2 or Sellita SW200-1 Movement Type Automatic, self-winding mechanical Lignes 11.5”’ Diameter 25.6mm Thickness 4.6mm Jewels 25 or 26 Vibrations Per Hour
Manufacturer Seiko Caliber Number 7009, 7009A Movement Type Automatic, self-winding mechanical Diameter 27.4mm Casing Diameter 27mm Height 4.9mm Jewel Count 17 Beat Rate 21,600 vph Lift Angle Unconfirmed Power Reserve
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