Seiko Cal. 7148 - 640

The Seiko 7148-640 represents an important milestone in Seiko's 1983 lineup. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-ab72e577f6a8]

Also known as: Tuna, Bullhead

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

11.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Navy

Jewels

32j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1983

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