Seiko Cal. 7090 - 309

Released in 1977, the Cal. 7090 with design code 309 was part of Seiko's domestic market collection. It features a Silver dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-f99bb199842c]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

11.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Silver

Jewels

23j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1977

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