Seiko Cal. 4427 - 712

Seiko 4427-712

The 4427-712 is a sought-after Spring Drive piece from Seiko's golden era. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-382849c9e6fa]

Also known as: Turtle, Shogun

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
15.7mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
180m
Dial Color
White
Jewels
19j
Frequency
36,000 bph
Power Reserve
47 hours
Year
1984

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