Seiko Cal. 6620 - 837

Released in 1972, the Cal. 6620 with design code 837 was part of Seiko's domestic market collection. With its 19mm lug width and 8.9mm profile, it sits comfortably on most wrists. [seikata-wm-00263bd5ec05]

Also known as: Sumo, Navigator

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

34mm

Case Thickness

8.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

150m

Dial Color

Champagne

Jewels

26j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1972

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