Seiko Cal. 5650 - 387

The Seiko 5650-387 represents an important milestone in Seiko's 1986 lineup. The Fixed bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-b5d4b81cb7ff]

Also known as: Sumo, Bullhead

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

38mm

Case Thickness

14.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

200m

Dial Color

Black

Jewels

30j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1986

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