Seiko Cal. 4581 - 256

The 4581-256 is a sought-after Solar piece from Seiko's golden era. Powered by the 4581 caliber with 30j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-956ab8895970]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

8.7mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Navy

Jewels

30j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1975

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