Seiko Cal. 6378 - 620

The Seiko 6378-620 represents an important milestone in Seiko's 1997 lineup. Powered by the 6378 caliber with 28j jewels beating at 36,000 bph, it delivers a 56 hours power reserve. [seikata-wm-9b933a3789c9]

Also known as: Tuna, Silverwave

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

10.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

80m

Dial Color

Green

Jewels

28j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1997

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