Seiko Cal. 6631 - 994

Seiko 6631-994

This Solar model from 1981 features a 44mm PVD Black case. Powered by the 6631 caliber with 17j jewels beating at 36,000 bph, it delivers a 56 hours power reserve. [seikata-wm-106aed41211b]

Specifications

Movement
Solar
Case Material
PVD Black
Case Width
44mm
Case Thickness
14.9mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
110m
Dial Color
Green
Jewels
17j
Frequency
36,000 bph
Power Reserve
56 hours
Year
1981

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seikata-wm-106aed41211b