Seiko Cal. 4581 - 177

The 4581-177 is a sought-after Solar piece from Seiko's golden era. Powered by the 4581 caliber with 25j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-0c8e339eeeb8]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

43mm

Case Thickness

12.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Black

Jewels

25j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1973

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