Seiko Cal. 6397 - 670

Released in 1995, the Cal. 6397 with design code 670 was part of Seiko's domestic market collection. Powered by the 6397 caliber with 26j jewels beating at 36,000 bph, it delivers a 68 hours power reserve. [seikata-wm-64a847245ea4]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

9.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

190m

Dial Color

Black

Jewels

26j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1995

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