Seiko Cal. 6644 - 650

This Solar model from 1966 features a 36mm Titanium case. The Coin-Edge bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-55fd44509420]

Also known as: Golden Tuna

Specifications

Movement

Solar

Case Material

Titanium

Case Width

36mm

Case Thickness

12.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1966

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