Seiko Cal. 6660 - 725

The 6660-725 is a sought-after Solar piece from Seiko's golden era. It features a Green dial protected by a Sapphire crystal and offers 200m of water resistance. [seikata-wm-90833bc478f9]

Also known as: Rally, Silverwave

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

34mm

Case Thickness

9.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Green

Jewels

20j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1981

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