Seiko Cal. 5666 - 407

Seiko 5666-407

The 5666-407 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5666 caliber with 27j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-c20bca78f2ca]

Also known as: Sumo, Bellmatic

Specifications

Movement
Hand-Winding
Case Material
Gold-Plated
Case Width
39mm
Case Thickness
13.7mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
70m
Dial Color
White
Jewels
27j
Frequency
28,800 bph
Power Reserve
47 hours
Year
1983

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