Seiko Cal. 4540 - 654

The Seiko 4540-654 represents an important milestone in Seiko's 1990 lineup. It features a White dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-28b2b205787e]

Also known as: Monster, Silverwave

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

14.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

90m

Dial Color

White

Jewels

20j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1990

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