Seiko Cal. 4581 - 940

Seiko 4581-940

The 4581-940 is a sought-after Automatic piece from Seiko's golden era. Powered by the 4581 caliber with 36j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-56e72400ab66]

Also known as: Bullhead, Bellmatic

Specifications

Movement
Automatic
Case Material
Gold-Plated
Case Width
36mm
Case Thickness
9.4mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
130m
Dial Color
Champagne
Jewels
36j
Frequency
36,000 bph
Power Reserve
38 hours
Year
1983

Related Models

seikata-wm-56e72400ab66