Seiko Cal. 6651 - 690

This Quartz model from 1968 features a 44mm Two-Tone case. Powered by the 6651 caliber with 22j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-5b029e66ec79]

Also known as: Tuna, Arnie

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

44mm

Case Thickness

15.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

190m

Dial Color

Navy

Jewels

22j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1968

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