Seiko Cal. 3864 - 288

The Seiko 3864-288 represents an important milestone in Seiko's 1989 lineup. The Bidirectional bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-469f39cf9d65]

Also known as: Sumo, Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

40mm

Case Thickness

9.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Green

Jewels

30j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1989

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