Seiko Cal. 3817 - 587

Released in 1995, the Cal. 3817 with design code 587 was part of Seiko's domestic market collection. With its 20mm lug width and 12.0mm profile, it sits comfortably on most wrists. [seikata-wm-9ee1930fe909]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

12.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

140m

Dial Color

Black

Jewels

30j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1995

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