Seiko Cal. 6137 - 954

The Seiko 6137-954 represents an important milestone in Seiko's 1975 lineup. The Bidirectional bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-5a61600ee635]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

15.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Green

Jewels

17j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1975

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