Seiko Cal. 5251 - 442

The Seiko 5251-442 represents an important milestone in Seiko's 1981 lineup. It features a Black dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-247254e97bd2]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

9.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Black

Jewels

24j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1981

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