Seiko Cal. 6387 - 520

The 6387-520 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6387 caliber with 30j jewels beating at 28,800 bph, it delivers a 72 hours power reserve. [seikata-wm-e8de9225a5a1]

Also known as: Monster, Helmet

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

38mm

Case Thickness

10.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

180m

Dial Color

Silver

Jewels

30j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1992

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