Seiko Cal. 3840 - 663

The Seiko 3840-663 represents an important milestone in Seiko's 1984 lineup. It features a White dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-9b212c6cd004]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

8.6mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

White

Jewels

30j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1984

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