Seiko Cal. 3887 - 315

Released in 1971, the Cal. 3887 with design code 315 was part of Seiko's domestic market collection. The Fixed bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-cab5cd4136a8]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

Titanium

Case Width

45mm

Case Thickness

10.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

80m

Dial Color

Green

Jewels

19j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1971

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