Seiko Cal. 4540 - 371

The Seiko 4540-371 represents an important milestone in Seiko's 1975 lineup. It features a White dial protected by a Sapphire crystal and offers 120m of water resistance. [seikata-wm-fb04f6682360]

Also known as: Tuna, Sea Horse

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

8.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

White

Jewels

35j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1975

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