Seiko Cal. 4451 - 831

Seiko 4451-831

This Automatic model from 1969 features a 36mm Two-Tone case. Powered by the 4451 caliber with 35j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-822690e21a28]

Also known as: World Timer, Navigator

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
36mm
Case Thickness
10.2mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
70m
Dial Color
Black
Jewels
35j
Frequency
21,600 bph
Power Reserve
57 hours
Year
1969

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seikata-wm-822690e21a28