Seiko Cal. 5648 - 111

This Quartz model from 1975 features a 37mm Hardlex-Coated Steel case. Powered by the 5648 caliber with 23j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-fa85c3704488]

Also known as: Helmet, Arnie

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

15.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Silver

Jewels

23j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1975

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