Seiko Cal. 6616 - 374

Seiko 6616-374

The 6616-374 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6616 caliber with 18j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-53047d74c2af]

Also known as: Sumo

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
12.0mm
Lug Width
18mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
50m
Dial Color
White
Jewels
18j
Frequency
28,800 bph
Power Reserve
47 hours
Year
1976

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