Seiko Cal. 6231 - 991

This Solar model from 1997 features a 38mm Stainless Steel case. Powered by the 6231 caliber with 28j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-e0dea743ae33]

Also known as: Tuna, Helmet

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

10.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

150m

Dial Color

Champagne

Jewels

28j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1997

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