Seiko Cal. 6635 - 837

This Automatic model from 1976 features a 38mm Two-Tone case. It features a Green dial protected by a Acrylic crystal and offers 30m of water resistance. [seikata-wm-cb8cf3f99b23]

Also known as: Silverwave, Baby Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

38mm

Case Thickness

13.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Green

Jewels

20j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1976

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