Seiko Cal. 5646 - 838

This Spring Drive model from 1989 features a 40mm Hardlex-Coated Steel case. With its 19mm lug width and 8.6mm profile, it sits comfortably on most wrists. [seikata-wm-f87dfa904dce]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

8.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Champagne

Jewels

35j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1989

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