Seiko Cal. 6630 - 905

The Seiko 6630-905 represents an important milestone in Seiko's 1972 lineup. Powered by the 6630 caliber with 29j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-3a19910b5416]

Also known as: Crown, Baby Tuna

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

37mm

Case Thickness

14.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Cream

Jewels

29j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1972

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