Seiko Cal. 6661 - 631

This Spring Drive model from 1966 features a 35mm Titanium case. Powered by the 6661 caliber with 22j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-de889d83cf71]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

35mm

Case Thickness

10.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Silver

Jewels

22j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1966

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