Seiko Cal. 6631 - 867

This Quartz model from 1965 features a 43mm Titanium case. Powered by the 6631 caliber with 26j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-f782893f30e0]

Also known as: Sumo, Panda

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

43mm

Case Thickness

15.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

White

Jewels

26j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1965

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