Seiko Cal. 6397 - 913

This Spring Drive model from 1986 features a 46mm Titanium case. Powered by the 6397 caliber with 23j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-9d148b7e8ed9]

Also known as: Samurai, Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

46mm

Case Thickness

8.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

140m

Dial Color

White

Jewels

23j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1986

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