SPECIFICATIONS
Movement6206, 6218
Caliber6206, 6218
Case size36–37 mm diameter; ~42–43.5 mm lug-to-lugmm
Case materialStainless steel, gold-plated / gold-cap
Case shapeRound with straight or beveled lugs
Thickness~11.5–13 mm including acrylicmm
Lug width19 mmmm
CrystalDomed acrylic
Dial colorSilver, white
ComplicationsDay + Date, quickset date, non-quickset or semi-quickset day
Release year1963
Seiko
weekDater
The Seiko Weekdater family consists of mid-1960s Seikomatic day-date watches, mainly with the 6206 and 6218 automatic movements. These watches are dress/business style with variations in technical details by reference.