Seiko Cal. 4544 - 137

Seiko 4544-137

This Automatic model from 1971 features a 36mm Hardlex-Coated Steel case. Powered by the 4544 caliber with 19j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-24ea95ca5ff8]

Also known as: Sumo, Tuna

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
36mm
Case Thickness
12.2mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
40m
Dial Color
Green
Jewels
19j
Frequency
28,800 bph
Power Reserve
61 hours
Year
1971

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