Seiko Cal. 6635 - 487

Seiko 6635-487

This Automatic model from 1974 features a 43mm Two-Tone case. Powered by the 6635 caliber with 27j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-04f4e4a1db51]

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
43mm
Case Thickness
13.6mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
160m
Dial Color
Green
Jewels
27j
Frequency
28,800 bph
Power Reserve
54 hours
Year
1974

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