40.5mm Modified SPB143J1/SPB253J1 Black Tiger Whale Watch Case For Seiko NH35 NH34 NH36 NH38 Movement
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Transform your next build with this Modified SPB143J1/SPB253J1 Black Tiger Whale Watch Case, featuring a striking ceramic or stainless steel bezel option. Crafted from 316L stainless steel, it showcases a bubble sapphire crystal with blue film for exceptional clarity. Complete with a solid steel bracelet, this case is designed for NH-series movements and delivers rugged dive watch aesthetics.
Specifications
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Style: SPB143J1 / SPB253J1 Black Tiger Whale
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Crown Position: 3 o'clock
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Case Material: 316L stainless steel
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Case Diameter: 40.5mm
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Case Thickness: 13.95mm (sapphire to case back)
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Glass: Sapphire crystal (bubble mirror with blue film)
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Bezel Options: Ceramic or stainless steel
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Outer diameter: 38.4mm
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Inner diameter: 30.2mm
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Thickness: 1.4mm
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Compatible Movements: 4R36, NH34, NH35, NH36, NH38
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Compatible Dial: 28.5mm
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Strap Width: 20mm
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Strap Material: 316L stainless steel bracelet
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Water Resistance: 10ATM (100m) with screw-down crown and solid screw case back


















































































































