Seiko Cal. 5681 - 620

Seiko 5681-620

The 5681-620 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5681 caliber with 18j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-cffd77d7cf2e]

Also known as: Sportsmatic, Sea Horse

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
43mm
Case Thickness
12.1mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
50m
Dial Color
Black
Jewels
18j
Frequency
36,000 bph
Power Reserve
54 hours
Year
1965

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