Seiko Cal. 3842 - 407

Seiko 3842-407

The 3842-407 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3842 caliber with 27j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-0109e588fbec]

Also known as: Sumo

Specifications

Movement
Automatic
Case Material
Gold-Plated
Case Width
40mm
Case Thickness
14.3mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
120m
Dial Color
Green
Jewels
27j
Frequency
28,800 bph
Power Reserve
57 hours
Year
1969

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