Seiko Cal. 6637 - 206

The Seiko 6637-206 represents an important milestone in Seiko's 1974 lineup. It features a Cream dial protected by a Mineral crystal and offers 160m of water resistance. [seikata-wm-9684dc3138ae]

Also known as: Golden Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

34mm

Case Thickness

12.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Cream

Jewels

21j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1974

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