82188218, 0.2 mm Japanese: Shaft Diameter: ф10 mm (ф 12 mm Internal) Shaft Length: 9.5 mm: Motor Diameter: ф89 mm: Motor Rotor Inertia: 3.260 kg*cm^2: Motor Length: 54.2 mm: MotorMiyota 8218 vs 8245: The caliber 8218 has a date at 3:00. The caliber 8245 is the same as the 8218 but without a date complication. Miyota 8218 vs 8219: Similar to the caliber 8218, there is