Seiko Cal. 5241 - 587

Seiko 5241-587

The Seiko 5241-587 represents an important milestone in Seiko's 1978 lineup. Powered by the 5241 caliber with 20j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-d154f9a90531]

Also known as: Helmet, Bellmatic

Specifications

Movement
Kinetic
Case Material
Titanium
Case Width
45mm
Case Thickness
15.5mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
190m
Dial Color
Blue Sunburst
Jewels
20j
Frequency
21,600 bph
Power Reserve
47 hours
Year
1978

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seikata-wm-d154f9a90531