Seiko Cal. 6621 - 657

The 6621-657 is a sought-after Solar piece from Seiko's golden era. With its 19mm lug width and 11.4mm profile, it sits comfortably on most wrists. [seikata-wm-3b4bfef3eb35]

Also known as: Monster, Navigator

Specifications

Movement

Solar

Case Material

Titanium

Case Width

40mm

Case Thickness

11.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Silver

Jewels

32j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1981

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