Seiko Cal. 4430 - 837

Seiko 4430-837

This Hand-Winding model from 1971 features a 38mm Titanium case. Powered by the 4430 caliber with 35j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-ba0e1e8de75e]

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
38mm
Case Thickness
9.1mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
70m
Dial Color
Burgundy
Jewels
35j
Frequency
21,600 bph
Power Reserve
48 hours
Year
1971

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