Seiko Cal. 7142 - 840

The Seiko 7142-840 represents an important milestone in Seiko's 1970 lineup. Powered by the 7142 caliber with 17j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-d56e92830956]

Also known as: Helmet, Golden Tuna

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

11.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Burgundy

Jewels

17j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1970

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