Seiko Cal. 7031 - 922

The 7031-922 is a sought-after Automatic piece from Seiko's golden era. Powered by the 7031 caliber with 33j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-2344bbebaf67]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

41mm

Case Thickness

10.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Navy

Jewels

33j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1968

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