Seiko Cal. 6657 - 830

The 6657-830 is a sought-after Solar piece from Seiko's golden era. It features a White dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-114ad1f368e4]

Also known as: Bellmatic, World Timer

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

10.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

140m

Dial Color

White

Jewels

25j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1973

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