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jespersh745225dMK850 is an example of wireless but not bluetooth. Uses something called "unified" I haven't bothered to look into why just works every where
It uses an rf transceiver on the 2.4ghz band. Each device broadcasts to the receiver with a packet that identifies its device id. It uses the id to demultiplex the incoming signals into discrete streams of instructions.
If you buy into that ecosystem, install the logitech software and make sure to update consistently. There have been a half dozen serious unified receiver vulnerabilities in the last 4 years.
theKarlisK758725dThe only wireless device I have deemed acceptable is my headsets. Yes they need a battery charged to keep them alive but at least I can step away from my desktop or the laptop without taking half my desk with me as I get up.