Seiko Cal. 3851 - 100

The Seiko 3851-100 represents an important milestone in Seiko's 1989 lineup. With its 20mm lug width and 9.4mm profile, it sits comfortably on most wrists. [seikata-wm-b66efea8d6b6]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

45mm

Case Thickness

9.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

90m

Dial Color

Cream

Jewels

22j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1989

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