Seiko Cal. 6618 - 550

This Spring Drive model from 1982 features a 42mm Hardlex-Coated Steel case. With its 20mm lug width and 8.5mm profile, it sits comfortably on most wrists. [seikata-wm-76ccf04bf541]

Also known as: Turtle, Samurai

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

8.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

80m

Dial Color

White

Jewels

26j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1982

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