Seiko Cal. 6697 - 520

This Spring Drive model from 1966 features a 44mm Titanium case. Powered by the 6697 caliber with 20j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-044ba54e4a58]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

15.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Black

Jewels

20j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1966

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