Seiko Cal. 6635 - 634

This Automatic model from 1987 features a 39mm Two-Tone case. It features a Burgundy dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-4cf5d971c823]

Also known as: Sumo, UFO

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

100m

Dial Color

Burgundy

Jewels

31j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1987

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