Seiko Cal. 4581 - 177

Seiko 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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