|Winding:||Automatic, Counter-Clockwise Automatic Winding|
|Diameter:||29.20 mm (13 ligne)|
|Complications:||Date, Day, Hand Winding, Outer Day Wheel, Quick Date Correction|
|Hands:||Central Hour Hand, Central Minute Hand, Central Seconds Hand, Date Window at 3:00, Day Window at 12:00|
Part of the Miyota Cal. 8200 family, Cal. 8285 is a day-date central seconds automatic movement. Unlike the day-date Miyota 8205, Cal. 8285 features an outer day wheel, showing the day of the week in full at 12:00 instead of an abbreviation at 3:00. It is mono-lingual.
All members of the Miyota 8200 family have indirect seconds, which causes a noticeable wobble to the central seconds hand. When struck, the seconds hand can appear to pause for up to 2 seconds due to slack in the movement.
24 Hour Hand at 9:00
|Small Seconds at 4:30||8218 (Date)|