Seiko Cal. 4427 - 557

Seiko 4427-557

The 4427-557 is a sought-after Quartz piece from Seiko's golden era. With its 19mm lug width and 10.6mm profile, it sits comfortably on most wrists. [seikata-wm-4e56f4158cb0]

Also known as: Sumo, Crown

Specifications

Movement
Quartz
Case Material
Two-Tone
Case Width
39mm
Case Thickness
10.6mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
100m
Dial Color
Navy
Jewels
21j
Frequency
28,800 bph
Power Reserve
58 hours
Year
1988

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