Seiko Cal. 6617 - 278

Seiko 6617-278

This Spring Drive model from 1975 features a 43mm Hardlex-Coated Steel case. Powered by the 6617 caliber with 17j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-b4a23ef2b3b9]

Also known as: Tuna, Goldfeather

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
43mm
Case Thickness
14.3mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
140m
Dial Color
Green
Jewels
17j
Frequency
36,000 bph
Power Reserve
51 hours
Year
1975

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