Seiko Cal. 6634 - 665

This Spring Drive model from 1980 features a 42mm Two-Tone case. Powered by the 6634 caliber with 17j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-2457f05a3a85]

Also known as: Crown, Flighty

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

13.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

White

Jewels

17j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1980

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