Seiko Cal. 6630 - 738

The 6630-738 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6630 caliber with 19j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-cd54f12d674d]

Also known as: Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

38mm

Case Thickness

12.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

200m

Dial Color

Cream

Jewels

19j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1966

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