Seiko Cal. 5652 - 677

The Seiko 5652-677 represents an important milestone in Seiko's 1981 lineup. With its 21mm lug width and 9.2mm profile, it sits comfortably on most wrists. [seikata-wm-c2183d88370e]

Also known as: Sumo, Helmet

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

39mm

Case Thickness

9.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Burgundy

Jewels

19j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1981

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