Seiko Cal. 6136 - 812

This Spring Drive model from 1969 features a 45mm Two-Tone case. It features a Navy dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-793a1f8dbf6f]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

45mm

Case Thickness

13.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Navy

Jewels

25j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1969

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