Seiko Cal. 7013 - 550

This Spring Drive model from 1978 features a 35mm Titanium case. Powered by the 7013 caliber with 31j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-d63ccc5627fe]

Also known as: Sumo, Arnie

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

35mm

Case Thickness

12.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Champagne

Jewels

31j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1978

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