Seiko Cal. 5638 - 503

Seiko 5638-503

This Hand-Winding model from 1997 features a 44mm Two-Tone case. Powered by the 5638 caliber with 28j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-f5646d6c1b24]

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
44mm
Case Thickness
9.3mm
Lug Width
22mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
120m
Dial Color
Green
Jewels
28j
Frequency
28,800 bph
Power Reserve
40 hours
Year
1997

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