Seiko Cal. 7030 - 421

The 7030-421 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 7030 caliber with 27j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-03eeef5c5af2]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

9.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

140m

Dial Color

Navy

Jewels

27j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1987

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