Seiko Cal. 6689 - 618

This Automatic model from 1968 features a 44mm Two-Tone case. Powered by the 6689 caliber with 24j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-72d08b6a88f3]

Also known as: Tuna, Golden Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

15.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Silver

Jewels

24j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1968

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