Seiko Cal. 5263 - 138

Seiko 5263-138

The Seiko 5263-138 represents an important milestone in Seiko's 1967 lineup. Powered by the 5263 caliber with 20j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-52f1a558bf7d]

Also known as: Baby Tuna

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
43mm
Case Thickness
13.9mm
Lug Width
21mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
110m
Dial Color
Blue Sunburst
Jewels
20j
Frequency
21,600 bph
Power Reserve
65 hours
Year
1967

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