Seiko Cal. 5643 - 375

Seiko 5643-375

The Seiko 5643-375 represents an important milestone in Seiko's 1973 lineup. Powered by the 5643 caliber with 19j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-fde6a92e6bd4]

Also known as: Samurai

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
11.4mm
Lug Width
22mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
90m
Dial Color
Navy
Jewels
19j
Frequency
21,600 bph
Power Reserve
36 hours
Year
1973

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