Seiko Cal. 6656 - 140

The 6656-140 is a sought-after Spring Drive piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-683ca180092f]

Also known as: Helmet, Silverwave

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

10.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1992

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