Hello there!)
I've been looking for a wireless solution for wireless guitar playing at home for a very long time. I have a audio interface Behringer U-Phoria UM2. I connect a guitar to it via a wire and headphones via a wire and use the ASIO driver. The total latency from touching the string to the sound output to the headphones (taking into account the processing by plug-ins) is 10-12 ms, which, according to most, is the limit of the acceptable latency for monitoring your playing.
To wirelessly send the signal from the guitar to the interface, I found a solution, this is Yamaha THR or Boss Katana Air with built-in receivers and their proprietary transmitters for guitars that do not have a latency, but there is only a JACK connector for monitoring output.
I never found a solution for wireless signal reception from the audio interface. Radio systems are too expensive (starting at $ 400) and bulky + you need to hang a radio receiver for headphones on a guitar strap (which is not very convenient for me). There are also Bluetooth headphones, but they need a Bluetooth receiver that is inserted into the computer's USB connector (which does not suit me, since I use an audio interface with a jack connector). Recently I found for myself Jack-Bluetooth an audio transmitter that allows from audio interfaces through the Jack, to translate the signal to bluetooth headphones, but the question remains, how big is the latency there? And are there such headphones (earbuds, earplugs), complete with a branded Jack-Bluetooth transmitter, for minimal latency?