Seiko Cal. 6630 - 706

The Seiko 6630-706 represents an important milestone in Seiko's 1974 lineup. Powered by the 6630 caliber with 25j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-f75eba9d3e61]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

41mm

Case Thickness

9.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

90m

Dial Color

Silver

Jewels

25j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1974

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