Seiko Cal. 6657 - 404

Seiko 6657-404

The 6657-404 is a sought-after Solar piece from Seiko's golden era. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-388b5f2568fc]

Also known as: Shogun, Bullhead

Specifications

Movement
Solar
Case Material
Gold-Plated
Case Width
40mm
Case Thickness
11.4mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
70m
Dial Color
Champagne
Jewels
18j
Frequency
21,600 bph
Power Reserve
68 hours
Year
1977

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