Seiko Cal. 4540 - 173

The Seiko 4540-173 represents an important milestone in Seiko's 1967 lineup. It features a White dial protected by a Sapphire crystal and offers 60m of water resistance. [seikata-wm-62811e707faa]

Also known as: Bullhead, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

14.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

60m

Dial Color

White

Jewels

31j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1967

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