Seiko Cal. 7121 - 542

The Seiko 7121-542 represents an important milestone in Seiko's 1987 lineup. It features a White dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-7f7309a1fa22]

Also known as: Tuna

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

34mm

Case Thickness

12.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

White

Jewels

21j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1987

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