Seiko Cal. 6618 - 354

This Spring Drive model from 1975 features a 37mm Titanium case. With its 22mm lug width and 13.2mm profile, it sits comfortably on most wrists. [seikata-wm-edf88425bcf0]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

13.2mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Cream

Jewels

31j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1975

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