Seiko Cal. 7148 - 637

Seiko 7148-637

The Seiko 7148-637 represents an important milestone in Seiko's 1978 lineup. Powered by the 7148 caliber with 33j jewels beating at 28,800 bph, it delivers a 46 hours power reserve. [seikata-wm-14b3853dbeae]

Specifications

Movement
Solar
Case Material
Gold-Plated
Case Width
40mm
Case Thickness
13.3mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
70m
Dial Color
Navy
Jewels
33j
Frequency
28,800 bph
Power Reserve
46 hours
Year
1978

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