Seiko Cal. 5648 - 446

The Seiko 5648-446 represents an important milestone in Seiko's 1981 lineup. The Fixed bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-407a10b98b89]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

38mm

Case Thickness

12.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

160m

Dial Color

Cream

Jewels

36j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1981

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