Seiko Cal. 4438 - 430

Seiko 4438-430

The 4438-430 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4438 caliber with 33j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-265cb229fd41]

Also known as: Monster, Bullhead

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
12.9mm
Lug Width
18mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
190m
Dial Color
Blue Sunburst
Jewels
33j
Frequency
28,800 bph
Power Reserve
50 hours
Year
1980

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seikata-wm-265cb229fd41