Seiko Cal. 4487 - 388

Seiko 4487-388

This Spring Drive model from 1986 features a 34mm Hardlex-Coated Steel case. The Rotating bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-9f3ebfbad7ac]

Also known as: Bellmatic, Baby Tuna

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
34mm
Case Thickness
8.7mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
180m
Dial Color
Blue Sunburst
Jewels
34j
Frequency
28,800 bph
Power Reserve
70 hours
Year
1986

Related Models

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