Seiko Cal. 5638 - 867

The 5638-867 is a sought-after Solar piece from Seiko's golden era. The Inner Rotating bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-ece0159aadd4]

Also known as: Bullhead, World Timer

Specifications

Movement

Solar

Case Material

Titanium

Case Width

46mm

Case Thickness

8.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Silver

Jewels

27j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1985

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