Seiko Cal. 5685 - 963

Seiko 5685-963

The 5685-963 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5685 caliber with 20j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-a7a56c2c3e2f]

Also known as: Tuna

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
38mm
Case Thickness
13.9mm
Lug Width
22mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
60m
Dial Color
White
Jewels
20j
Frequency
28,800 bph
Power Reserve
70 hours
Year
1978

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