Seiko Cal. 5645 - 651

Seiko 5645-651

The 5645-651 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5645 caliber with 31j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-c18e2937962c]

Also known as: Bullhead

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
34mm
Case Thickness
10.8mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
70m
Dial Color
Black
Jewels
31j
Frequency
28,800 bph
Power Reserve
60 hours
Year
1966

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seikata-wm-c18e2937962c