Seiko Cal. 4487 - 113

The Seiko 4487-113 represents an important milestone in Seiko's 1986 lineup. Powered by the 4487 caliber with 27j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-6f779980f819]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

14.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Burgundy

Jewels

27j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1986

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