Seiko Cal. 6131 - 912

This Spring Drive model from 1973 features a 45mm Stainless Steel case. It features a Silver dial protected by a Sapphire crystal and offers 180m of water resistance. [seikata-wm-56aef2af8143]

Also known as: Tuna, Bullhead

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

8.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Silver

Jewels

21j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1973

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