SEIKO - SRPK31K1

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Movement
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Caliber Number
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4R36
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Movement Type
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Automatic with manual winding
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Power reserve
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Approx. 41 hours
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Jewels
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24
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Functions
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Stop second hand function
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Day/Date display
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Other Details
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Water Resistance
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10 bar
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Magnetic Resistance
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4,800 A/m
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Weight
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165.0g
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Features
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Unidirectional rotating bezel
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See-through & Screw case back
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Case/Band
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Case Material
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Stainless steel
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Case Size
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Thickness:12.1mmDiameter:38.0mmLug-to-lug:44.2mm
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Crystal
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Hardlex
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LumiBrite
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LumiBrite on hands, index(es) and bezel
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Clasp
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Three-fold clasp with push button release
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Distance between lugs
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20mm
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Beats per Hour21,600 bph(6 bps)
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Manual Winding
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Accuracy
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+45 /-35 seconds per day