Seiko Cal. 3864 - 285

Released in 1990, the Cal. 3864 with design code 285 was part of Seiko's domestic market collection. It features a Silver dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-edded46cc9b6]

Also known as: Sportsmatic, Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

12.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Silver

Jewels

24j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1990

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