Seiko Cal. 6316 - 671

The Seiko 6316-671 represents an important milestone in Seiko's 1987 lineup. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-f610af704832]

Also known as: Crown, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

10.0mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Black

Jewels

29j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1987

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