Seiko Cal. 4427 - 712

Seiko 4427-712

The 4427-712 is a sought-after Solar piece from Seiko's golden era. The Bidirectional bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-4f094f4490a7]

Also known as: Sportsmatic

Specifications

Movement
Solar
Case Material
PVD Black
Case Width
42mm
Case Thickness
12.2mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
130m
Dial Color
Silver
Jewels
32j
Frequency
28,800 bph
Power Reserve
36 hours
Year
1978

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