Seiko Cal. 5221 - 387

This Quartz model from 1965 features a 40mm Titanium case. Powered by the 5221 caliber with 23j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-a6f87e0d4c6e]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

40mm

Case Thickness

13.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

30m

Dial Color

Silver

Jewels

23j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1965

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