Mooer Air P05 Wireless System

I use it in my appartment and only tried it at ~15 m distance max with no walls in between, so I don't know how well it behaves on stage for instance, but for bedroom practice is amazing. It connects instantly, the signal is consistent, I can't feel any latency and the battery life is decent (~4 h in my case). Totally worth the money.

100% recommended for rehearsals and as it is compatible with multiplex (route several transmitters to one receiver and viceversa) or use up to 4 in parallel, I'm thinking on buying a second pair to just leave the transmitter plugged on both my guitars.

Be aware that the battery is non-removable, so as it loses charging capacity you will have to buy a new unit. So if you plan to give it intense use (ie: wear off the battery quickly), I'd consider a more "professional" system (like the traditional Sennheisers), which typically work with 9V batteries.