Seiko Cal. 6397 - 774

The Seiko 6397-774 represents an important milestone in Seiko's 1991 lineup. Powered by the 6397 caliber with 17j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-3d68ed7adefc]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

15.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1991

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