Seiko Cal. 6697 - 556

This Spring Drive model from 1967 features a 46mm Hardlex-Coated Steel case. Powered by the 6697 caliber with 28j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-7c047ce05448]

Also known as: Bullhead, UFO

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

14.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Black

Jewels

28j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1967

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