Seiko Cal. 5637 - 990

This Quartz model from 1967 features a 41mm Two-Tone case. It features a Navy dial protected by a Mineral crystal and offers 110m of water resistance. [seikata-wm-6644aac19c4c]

Also known as: Silverwave

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

41mm

Case Thickness

10.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Navy

Jewels

31j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1967

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