Seiko Cal. 4478 - 677

Seiko 4478-677

The 4478-677 is a sought-after Automatic piece from Seiko's golden era. It features a Green dial protected by a Sapphire crystal and offers 60m of water resistance. [seikata-wm-5a8a97effb44]

Also known as: Sportsmatic

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
38mm
Case Thickness
13.7mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
60m
Dial Color
Green
Jewels
33j
Frequency
28,800 bph
Power Reserve
63 hours
Year
1982

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