A "cheap" pedal board wireless system that I bought as a gateway into wireless guitar units.
I live in a 12 story building with a lot of wifi units around my apartment and this thing never dropped out since I bought it. The signal is not lost even if you play in another room. The tuner awesome and it is pedal sized so you can easily fit it on your pedalboard.
The negative point for the unit is the "cable-tone" knob has unusual resistance mid way of rolling. It still works of course. To be honest I don't get why anyone would like to have the "cable-tone" turned on anyway, it just takes away your highs. Even if you are for some reason picky with your tone, you could just dial the highs out with your amp. Without the feature the unit could be even cheaper. Oh well, to each his own.
You will get a better and more premium unit when you buy a Sennheiser or a Shure with more features and channel scanning, etc. but if you take into account that it works with a 5,8 ghz frequency, has a tuner and is pedalboard compatible and around 100 euros, you can't go wrong with it.