Seiko Cal. 4478 - 638

Seiko 4478-638

The 4478-638 is a sought-after Automatic piece from Seiko's golden era. The Coin-Edge bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-c2723f1eb44f]

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
9.9mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
140m
Dial Color
Cream
Jewels
18j
Frequency
36,000 bph
Power Reserve
52 hours
Year
1975

Related Models

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