Found these on sale while looking for a small Bluetooth Keyboard. Runs & charges from USB C, wireless low profile mech keyboard. Windows or Mac and two switch types to choose from: Red or Blue.
One with RED switches : https://www.pccasegear.com/products/51839/cooler-master-sk62…
One with Blue switches : https://www.pccasegear.com/products/51838/cooler-master-sk62…
I get horrrrrrible Bluetooth connectivity on this thing. Even to a laptop right next to it. Might be just my environment but I have an Rk84 and Cq84 which have zero issues over Bluetooth.