Seiko Cal. 4581 - 677

Seiko 4581-677

This Hand-Winding model from 1975 features a 36mm Titanium case. Powered by the 4581 caliber with 28j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-7a655cd8831d]

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
36mm
Case Thickness
13.8mm
Lug Width
20mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
30m
Dial Color
Champagne
Jewels
28j
Frequency
21,600 bph
Power Reserve
71 hours
Year
1975

Related Models

seikata-wm-7a655cd8831d