Seiko Cal. 5630 - 317

The Seiko 5630-317 represents an important milestone in Seiko's 1990 lineup. It features a Blue Sunburst dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-06b02a01371f]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

36mm

Case Thickness

9.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1990

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