Seiko Cal. 5621 - 623

Seiko 5621-623

The Seiko 5621-623 represents an important milestone in Seiko's 1973 lineup. Powered by the 5621 caliber with 21j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-b883b4810d5a]

Also known as: Monster, Arnie

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
37mm
Case Thickness
10.5mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
80m
Dial Color
Silver
Jewels
21j
Frequency
28,800 bph
Power Reserve
61 hours
Year
1973

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seikata-wm-b883b4810d5a