Seiko Cal. 6689 - 564

This Spring Drive model from 1984 features a 41mm Hardlex-Coated Steel case. Powered by the 6689 caliber with 18j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-cf1917f8e652]

Also known as: Bellmatic, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

12.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Cream

Jewels

18j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1984

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