Seiko Cal. 3821 - 138

The Seiko 3821-138 represents an important milestone in Seiko's 1986 lineup. With its 18mm lug width and 11.7mm profile, it sits comfortably on most wrists. [seikata-wm-3155bbb2b24d]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

42mm

Case Thickness

11.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

170m

Dial Color

Black

Jewels

21j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1986

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