Seiko – Specifications (Caliber 4N30)
Movement
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Caliber Number: 4N30
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Movement Type: Quartz
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Precision: ±15 seconds per month
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Battery Life: Approx. 3 years
Case / Band
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Case Material: Stainless steel
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Case Size:
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Thickness: 6.4 mm
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Diameter: 27.2 mm
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Lug-to-lug: 39.0 mm
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Crystal: Sapphire crystal
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Band Material: Cow leather
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Distance Between Lugs: 22 mm
Other Details
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Water Resistance: 5 bar (50 m)
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Magnetic Resistance: 4,800 A/m
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Weight: 31 g
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Features: Screw case back
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