Seiko Cal. 6371 - 610

The Seiko 6371-610 represents an important milestone in Seiko's 1987 lineup. The Bidirectional bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-d756172b9c1e]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

45mm

Case Thickness

9.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Navy

Jewels

21j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1987

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