Seiko Cal. 5631 - 564

Seiko 5631-564

This Solar model from 1991 features a 36mm Two-Tone case. Powered by the 5631 caliber with 36j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-f9f7b89b7a32]

Specifications

Movement
Solar
Case Material
Two-Tone
Case Width
36mm
Case Thickness
11.8mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
80m
Dial Color
Black
Jewels
36j
Frequency
21,600 bph
Power Reserve
36 hours
Year
1991

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