Seiko Cal. 6621 - 603

The Seiko 6621-603 represents an important milestone in Seiko's 1975 lineup. Powered by the 6621 caliber with 31j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-502d8375fe93]

Also known as: Baby Tuna

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

44mm

Case Thickness

9.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

100m

Dial Color

White

Jewels

31j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1975

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