Seiko Cal. 6131 - 176

The Seiko 6131-176 represents an important milestone in Seiko's 1970 lineup. The Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-2715591e2234]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

15.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1970

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