Group-Buy Ursa Major By Sirius Keyboard Kit

€ 500

German Sales Tax included. Sales Tax and Shipping will change during Checkout depending on Country.


Group Buy Starts: 23rd December 2022

Group Buy Ends: 16th January 2023

Estimated Shipping: Q3 2023


You can not combine GB products in the same order with in-stock products!



  • 2 pieces of Nokia BL-5J lithium batteries included by default
  • Due to shipping restrictions, we will only ship Batteries within the EU. Outside the EU you will need to source batteries on your own.



  • fully wireless Bluetooth split 75% keyboard recognized as a single input device
  • supports cross-hand key combination and layers
  • top mount, soldered PCB, dual mode (wired and Bluetooth wireless)
  • Built-in lithium battery type-c charging, the battery life expectancy: half a year (some vendors might not offer lithium batteries due to shipping regulations, see more below)
  • fr4 plate with an antenna integrated for signal boosting
  • Fully programmable using the LNE LINK ( or available for both Windows and macOS. No flashing is required.
  • Programmable knob
  • The weight is the same color as the middle frame with a brushed finish (E-white limited edition comes with a PVD brass middle frame and weight)
  • Supports plate mount stabilizers
  • Comes with a hard carry case



  • Colors:
    Silver housing + Gunmetal mid frame and weight
    Black housing + Dark green mid frame and weight
    Lavender housing + Silver mid frame and weight
    E-white housing + PVD brass mid frame and weight
  • Extras (purchase extra parts here):
    • Mid frame + weight (extra)
      • Dark blue
      • Silver
      • Gunmetal
      • Dark green
      • Black
      • Burgundy
      • Pink
      • Red
      • Lavender
    • 3D printed stand (clear)
    • Pre-assembly (extra): plate + PCB combo for both side 



  • US / ASIA: zFrontier
  • OCE: Switchkeys


With the purchase of this product, you confirm that you have understood that this is a Group Buy which is expected to be shipped at the time stated on this page. As this is an expected delivery date, we cannot guarantee that the shipping date will be met.

The final product may be different from the rendered photos. There may be a slight variation in color.  


Only the parts mentioned in the Kits are included. No Stabilizer, Switches or Keycaps.