Seiko Cal. 5639 - 646

The Seiko 5639-646 represents an important milestone in Seiko's 1988 lineup. It features a Cream dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-c00d082987f6]

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

15.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Cream

Jewels

20j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1988

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