Seiko Cal. 5631 - 948

Seiko 5631-948

The Seiko 5631-948 represents an important milestone in Seiko's 1974 lineup. Powered by the 5631 caliber with 19j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-94dce2aa3bd6]

Also known as: Turtle, Monster

Specifications

Movement
Solar
Case Material
Two-Tone
Case Width
42mm
Case Thickness
8.4mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
70m
Dial Color
Silver
Jewels
19j
Frequency
28,800 bph
Power Reserve
51 hours
Year
1974

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