Seiko Cal. 6656 - 257

Seiko 6656-257

The 6656-257 is a sought-after Automatic piece from Seiko's golden era. It features a Green dial protected by a Acrylic crystal and offers 70m of water resistance. [seikata-wm-aae57819164f]

Also known as: Turtle, Tuna

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
9.1mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
70m
Dial Color
Green
Jewels
28j
Frequency
28,800 bph
Power Reserve
37 hours
Year
1966

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