Seiko Cal. 4577 - 845

Seiko 4577-845

This Hand-Winding model from 1972 features a 46mm PVD Black case. Powered by the 4577 caliber with 36j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-ef85a4101b9a]

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
46mm
Case Thickness
15.1mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
70m
Dial Color
Burgundy
Jewels
36j
Frequency
21,600 bph
Power Reserve
71 hours
Year
1972

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