Seiko Cal. 5660 - 721

The 5660-721 is a sought-after Solar piece from Seiko's golden era. With its 18mm lug width and 9.8mm profile, it sits comfortably on most wrists. [seikata-wm-0fc1ddb2aaba]

Also known as: Samurai

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

39mm

Case Thickness

9.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

140m

Dial Color

Champagne

Jewels

24j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1978

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