Seiko Cal. 5617 - 906

Seiko 5617-906

The 5617-906 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5617 caliber with 18j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-9c93486f33be]

Also known as: Sumo, Golden Tuna

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
46mm
Case Thickness
10.8mm
Lug Width
19mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
80m
Dial Color
Blue Sunburst
Jewels
18j
Frequency
36,000 bph
Power Reserve
49 hours
Year
1973

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