Seiko Cal. 6657 - 318

The 6657-318 is a sought-after Spring Drive piece from Seiko's golden era. It features a Navy dial protected by a Acrylic crystal and offers 130m of water resistance. [seikata-wm-4b1225699a16]

Also known as: Goldfeather, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

9.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Navy

Jewels

33j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1970

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