Seiko Cal. 6131 - 389

The Seiko 6131-389 represents an important milestone in Seiko's 1977 lineup. It features a Green dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-d75b9c94e56d]

Also known as: Samurai, Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

11.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

170m

Dial Color

Green

Jewels

19j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1977

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