Seiko Cal. 3823 - 657

This Automatic model from 1978 features a 44mm Hardlex-Coated Steel case. With its 20mm lug width and 15.7mm profile, it sits comfortably on most wrists. [seikata-wm-8e28ce2ea57c]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

15.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Black

Jewels

34j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1978

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