Seiko Cal. 6320 - 137

The Seiko 6320-137 represents an important milestone in Seiko's 1972 lineup. Powered by the 6320 caliber with 34j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-33f414e93f93]

Also known as: Tuna, Navigator

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

8.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

40m

Dial Color

White

Jewels

34j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1972

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