Seiko Cal. 6187 - 131

The Seiko 6187-131 represents an important milestone in Seiko's 1988 lineup. Powered by the 6187 caliber with 30j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-aebc13640c9e]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

12.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Navy

Jewels

30j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1988

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