Seiko Cal. 6316 - 812

This Spring Drive model from 1969 features a 45mm PVD Black case. With its 21mm lug width and 12.3mm profile, it sits comfortably on most wrists. [seikata-wm-5ef3012ed658]

Also known as: Helmet, Bellmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

12.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

200m

Dial Color

Silver

Jewels

35j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1969

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