Seiko Cal. 6373 - 621

The Seiko 6373-621 represents an important milestone in Seiko's 1978 lineup. Powered by the 6373 caliber with 27j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-433e171b110d]

Also known as: Baby Tuna, Arnie

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

37mm

Case Thickness

8.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1978

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