Seiko Cal. 4437 - 178

Seiko 4437-178

The Seiko 4437-178 represents an important milestone in Seiko's 1990 lineup. Powered by the 4437 caliber with 20j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-20014ca91b10]

Also known as: Rally, Silverwave

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
36mm
Case Thickness
14.5mm
Lug Width
22mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
190m
Dial Color
Green
Jewels
20j
Frequency
21,600 bph
Power Reserve
57 hours
Year
1990

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seikata-wm-20014ca91b10