Seiko Cal. 3847 - 257

Seiko 3847-257

The 3847-257 is a sought-after Automatic piece from Seiko's golden era. The Coin-Edge bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-f7c4010e5ef3]

Also known as: Monster, Sumo

Specifications

Movement
Automatic
Case Material
Gold-Plated
Case Width
37mm
Case Thickness
12.0mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
90m
Dial Color
Navy
Jewels
35j
Frequency
36,000 bph
Power Reserve
53 hours
Year
1966

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