Seiko Cal. 6313 - 691

The Seiko 6313-691 represents an important milestone in Seiko's 1966 lineup. Powered by the 6313 caliber with 25j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-ada3970d4c47]

Also known as: Tuna, Pogue

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

36mm

Case Thickness

10.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

40m

Dial Color

Champagne

Jewels

25j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1966

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