Seiko Cal. 5630 - 990

This Spring Drive model from 1976 features a 42mm Two-Tone case. It features a Blue Sunburst dial protected by a Mineral crystal and offers 110m of water resistance. [seikata-wm-c83c7f4a4606]

Also known as: World Timer, Emperor

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

13.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1976

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