Seiko Cal. 6615 - 374

This Spring Drive model from 1979 features a 37mm Two-Tone case. It features a Black dial protected by a Sapphire crystal and offers 180m of water resistance. [seikata-wm-5d65b1e0d206]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

14.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Black

Jewels

22j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1979

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