Seiko Cal. 5271 - 437

Released in 1965, the Cal. 5271 with design code 437 was part of Seiko's domestic market collection. It features a White dial protected by a Sapphire crystal and offers 120m of water resistance. [seikata-wm-1bc5efd6519f]

Also known as: Helmet, Sea Horse

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

11.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

120m

Dial Color

White

Jewels

18j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1965

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