Seiko Cal. 5660 - 921

The 5660-921 is a sought-after Solar piece from Seiko's golden era. The Inner Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-f0f6562a63b1]

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

9.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Green

Jewels

29j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1999

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