Seiko Cal. 3887 - 510

Released in 1972, the Cal. 3887 with design code 510 was part of Seiko's domestic market collection. It features a Green dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-325e868b6eb7]

Also known as: Helmet, Emperor

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

39mm

Case Thickness

10.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

30m

Dial Color

Green

Jewels

28j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1972

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