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CP Seiko Black Nautilus Open Heart

Regular price €550.00 EUR
Regular price Sale price €550.00 EUR
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  • Case: 904L black PVD stainless steel
  • Diameter: 39 or 41mm
  • Crown: 904L black PVD stainless steel
  • Bezel: Brushed black PVD 904L stainless steel 
  • Case back: Sapphire or solid
  • Strap: 904L black PVD stainless steel
  • Glass: Sapphire
  • Dial: Blue with opening on the balance wheel
  • Index: Applied with super luminova C1
  • Hands: Steel with C1 super luminova


  • Caliber: Seiko NH38 automatic winding with manual winding mechanism
  • Functions: 3 hands (hours, minutes, seconds), exposed balance wheel
  • Power reserve: 41h for a fully wound caliber
  • Jewels: 23 rubies
  • Alternation per hour: 21,600 alternations / hour (6 alternations / sec)
  • Precision: -10/+10 seconds per day



NH35 Operating Instructions EN

NH35 EN Operating Instructions

Water resistance

Water-resistant to 5 ATM


1-year warranty