Seiko Cal. 6397 - 957

The Seiko 6397-957 represents an important milestone in Seiko's 1978 lineup. Powered by the 6397 caliber with 17j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-1a1816baaf50]

Also known as: Bellmatic, World Timer

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

45mm

Case Thickness

15.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Black

Jewels

17j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1978

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