Seiko Cal. 5641 - 580

Seiko 5641-580

This Hand-Winding model from 1974 features a 36mm Two-Tone case. Powered by the 5641 caliber with 30j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-4cfe076d09c9]

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
36mm
Case Thickness
15.4mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
160m
Dial Color
Silver
Jewels
30j
Frequency
28,800 bph
Power Reserve
71 hours
Year
1974

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seikata-wm-4cfe076d09c9