Seiko Cal. 5637 - 445

Seiko 5637-445

This Quartz model from 1965 features a 37mm Two-Tone case. Powered by the 5637 caliber with 33j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-92fa533d3634]

Specifications

Movement
Quartz
Case Material
Two-Tone
Case Width
37mm
Case Thickness
9.6mm
Lug Width
21mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
140m
Dial Color
Blue Sunburst
Jewels
33j
Frequency
28,800 bph
Power Reserve
65 hours
Year
1965

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