Seiko Cal. 3897 - 643

The Seiko 3897-643 represents an important milestone in Seiko's 1981 lineup. It features a Burgundy dial protected by a Mineral crystal and offers 130m of water resistance. [seikata-wm-7b6c137b6f75]

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

39mm

Case Thickness

10.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Burgundy

Jewels

29j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1981

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