Seiko Cal. 4478 - 987

Seiko 4478-987

This Automatic model from 1992 features a 46mm Titanium case. Powered by the 4478 caliber with 17j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-5cc5c8091d2e]

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
46mm
Case Thickness
10.4mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
170m
Dial Color
Black
Jewels
17j
Frequency
28,800 bph
Power Reserve
50 hours
Year
1992

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