Seiko Cal. 6631 - 512

Seiko 6631-512

The Seiko 6631-512 represents an important milestone in Seiko's 1980 lineup. Powered by the 6631 caliber with 33j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-f2be03a0a0fe]

Also known as: Turtle, Samurai

Specifications

Movement
Solar
Case Material
PVD Black
Case Width
46mm
Case Thickness
13.9mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
180m
Dial Color
Champagne
Jewels
33j
Frequency
28,800 bph
Power Reserve
36 hours
Year
1980

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