Seiko Cal. 4540 - 997

Seiko 4540-997

This Hand-Winding model from 1991 features a 46mm Titanium case. Powered by the 4540 caliber with 21j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-7aac74f1dce6]

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
46mm
Case Thickness
9.8mm
Lug Width
19mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
130m
Dial Color
Black
Jewels
21j
Frequency
28,800 bph
Power Reserve
36 hours
Year
1991

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