Seiko Cal. 5641 - 521

Seiko 5641-521

The 5641-521 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5641 caliber with 34j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-6dfd3d3a3af9]

Also known as: Monster, World Timer

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
35mm
Case Thickness
15.4mm
Lug Width
21mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
180m
Dial Color
White
Jewels
34j
Frequency
21,600 bph
Power Reserve
59 hours
Year
1993

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