Seiko Cal. 3887 - 643

The Seiko 3887-643 represents an important milestone in Seiko's 1988 lineup. It features a White dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-5bb0608ce354]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

15.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

White

Jewels

20j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1988

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