Seiko Cal. 6661 - 526

The 6661-526 is a sought-after Spring Drive piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-8dda4955e6da]

Also known as: Tuna, Silverwave

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

12.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1995

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