Seiko Cal. 5634 - 942

Seiko 5634-942

The 5634-942 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5634 caliber with 20j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-1b3b06103b5c]

Also known as: Tuna, Arnie

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
42mm
Case Thickness
14.2mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
200m
Dial Color
Burgundy
Jewels
20j
Frequency
21,600 bph
Power Reserve
63 hours
Year
1987

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