Seiko Cal. 3818 - 523

The 3818-523 is a sought-after Automatic piece from Seiko's golden era. With its 18mm lug width and 9.3mm profile, it sits comfortably on most wrists. [seikata-wm-1fab0ee7c768]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

9.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1981

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