Seiko Cal. 6657 - 993

The 6657-993 is a sought-after Solar piece from Seiko's golden era. With its 19mm lug width and 11.1mm profile, it sits comfortably on most wrists. [seikata-wm-8a26c5be98ef]

Also known as: UFO

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

38mm

Case Thickness

11.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Black

Jewels

36j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1970

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