Sirius Ursa Major

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  • Keyboard: Two-piece split keyboard, 75% layout, anodized aluminum case
  • Color:
      Silver case + Gray middle frame and weight bar,  
      Black case + Dark Green middle frame and weight bar,  
      Purple case + Silver middle frame and weight bar,  
      White case + PVD Brass middle frame and weight bar (limited edition),  
  • Structure: Top mount
  • PCB: Soldered PCB, bluetooth dual mode, support built-in lithium battery charging, type-c interface
  • Battery type: Nokia BL5J * 2 ( not included in the kit, should be purchased locally)
  • Plate: FR4 plate with antenna (to greatly enhance the signal), fully programmable with LNE LINK software under win/mac
  • Scroll wheel: Programmable
  • Weight bar: Aluminum alloy, brushed surface, the same color as the middle frame (The white limited edition is PVD brass middle frame and weight bar)
  • Stabilizers: Plate mount
  • Ursa Major Product Introduction: Link
  • Design by 天狼星 Sirius


  • Case x1
  • Middle frame x1
  • Weight bar x1
  • PCB x1
  • FR4 plate (two pieces) x1 set
  • Foams x1 set


  • Release date: January, 2024 (2023-11-10)
  • Estimated shipping date: To be updated


Extra optional accessories

  • Aluminum middle frame + Aluminum weight bar: Dark blue, Silver, Gray, Dark green, Black, Wine red, Pink, Red, Purple
  • Transparent stand: 3D printed transparent resin stand for vertical display of the keyboard
  • Extra barebone kit: two-piece of FR4 plate (2 pieces) + PCB (4 pieces) + battery (2 pieces) set