Seiko Cal. 5689 - 420

Seiko 5689-420

The 5689-420 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5689 caliber with 36j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-e3f726bc542f]

Also known as: Sumo, Arnie

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
43mm
Case Thickness
8.1mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
130m
Dial Color
Navy
Jewels
36j
Frequency
36,000 bph
Power Reserve
44 hours
Year
1978

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