Seiko Cal. 5665 - 370

The Seiko 5665-370 represents an important milestone in Seiko's 1979 lineup. It features a Black dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-40a38c047235]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

13.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

110m

Dial Color

Black

Jewels

31j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1979

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