Seiko Cal. 3864 - 363

Released in 1989, the Cal. 3864 with design code 363 was part of Seiko's domestic market collection. The Inner Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-50ee684ba71b]

Also known as: Sumo, Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

10.8mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Green

Jewels

35j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1989

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