Seiko Cal. 4439 - 728

Seiko 4439-728

This Automatic model from 1968 features a 41mm Two-Tone case. Powered by the 4439 caliber with 30j jewels beating at 28,800 bph, it delivers a 45 hours power reserve. [seikata-wm-1d7ed03931d1]

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
41mm
Case Thickness
14.4mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
80m
Dial Color
Navy
Jewels
30j
Frequency
28,800 bph
Power Reserve
45 hours
Year
1968

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