Seiko Cal. 4540 - 687

The Seiko 4540-687 represents an important milestone in Seiko's 1986 lineup. It features a White dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-1d23f05f1e5c]

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

42mm

Case Thickness

11.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

100m

Dial Color

White

Jewels

18j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1986

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