Seiko Cal. 6657 - 877

The 6657-877 is a sought-after Spring Drive piece from Seiko's golden era. With its 21mm lug width and 14.6mm profile, it sits comfortably on most wrists. [seikata-wm-3724a533f074]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

44mm

Case Thickness

14.6mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Navy

Jewels

25j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1972

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