Seiko Cal. 5618 - 631

The 5618-631 is a sought-after Solar piece from Seiko's golden era. It features a White dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-bf839bd9747f]

Also known as: Baby Tuna

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

15.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

White

Jewels

18j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1974

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