Seiko Cal. 5631 - 308

The 5631-308 is a sought-after Solar piece from Seiko's golden era. It features a Navy dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-cb08803bfafb]

Also known as: Bellmatic

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

41mm

Case Thickness

9.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

70m

Dial Color

Navy

Jewels

19j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1983

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