Seiko Cal. 5638 - 340

The 5638-340 is a sought-after Solar piece from Seiko's golden era. It features a White dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-2293d0d2696d]

Also known as: Golden Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

11.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

30m

Dial Color

White

Jewels

32j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1975

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