Seiko Cal. 5639 - 778

The Seiko 5639-778 represents an important milestone in Seiko's 1977 lineup. It features a White dial protected by a Mineral crystal and offers 200m of water resistance. [seikata-wm-0c5f1cf932f8]

Also known as: Emperor

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

12.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

200m

Dial Color

White

Jewels

26j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1977

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