Seiko Cal. 4540 - 641

The Seiko 4540-641 represents an important milestone in Seiko's 1979 lineup. It features a Champagne dial protected by a Mineral crystal and offers 170m of water resistance. [seikata-wm-b195463f72b1]

Also known as: Rally, Navigator

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

45mm

Case Thickness

14.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Champagne

Jewels

36j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1979

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