Seiko Cal. 4431 - 288

The Seiko 4431-288 represents an important milestone in Seiko's 1985 lineup. It features a Black dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-239aa44e14f6]

Also known as: Silverwave, Sportsmatic

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

36mm

Case Thickness

8.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Black

Jewels

33j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1985

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