Amazon.com: Perixx PERIBOARD-624B US, Wireless Ergonomic Split Keyboard - Up 30 Ft Separation - Adjustable Tilt Angle - Low Profile Membrane Keys - Black - US English : Electronics
Keyboard Builders' Digest
Let me introduce you SofleKeyboard - a split keyboard based on Lily58 and Crkbd – Josef Adamčík
Let's Split Low Profile : r/MechanicalKeyboards
Buy Pre-soldered Wireless Dao Choc BLE Keyboard Low Profile Hotswap Split Keyboard (42 Keys Variant) - beekeeb
splitkb.com - All about split keyboards.
Amazon.com: Perixx PERIBOARD-535RD Wired Ergonomic Mechanical Split Keyboard - Low-Profile Red Linear Switches - Programmable Feature with Macro Keys - Compatible with Windows and Mac OS X - US English, Black : Electronics