Seiko Cal. 6630 - 739

The Seiko 6630-739 represents an important milestone in Seiko's 1971 lineup. Powered by the 6630 caliber with 17j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-960231435b36]

Also known as: Samurai

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

34mm

Case Thickness

11.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Black

Jewels

17j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1971

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