Seiko Cal. 4487 - 113

Seiko 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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