Seiko Cal. 6636 - 420

Seiko 6636-420

This Solar model from 1994 features a 42mm PVD Black case. Powered by the 6636 caliber with 30j jewels beating at 21,600 bph, it delivers a 67 hours power reserve. [seikata-wm-0a3e6a8374e9]

Also known as: UFO, Flighty

Specifications

Movement
Solar
Case Material
PVD Black
Case Width
42mm
Case Thickness
10.8mm
Lug Width
19mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
100m
Dial Color
Navy
Jewels
30j
Frequency
21,600 bph
Power Reserve
67 hours
Year
1994

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