Seiko Cal. 4531 - 306

The 4531-306 is a sought-after Solar piece from Seiko's golden era. Powered by the 4531 caliber with 19j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-247d8723c743]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

11.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1977

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