IP67 is an average ranking right now indicating extremely resistant and probably rugged audio system suitable for outside of doors audio system. That’s not just other Hyperboom speakers possibly, but a range of different alternatives within the UE range. If it works with the application, it works with PartyUp. https://www.bluetoothspeaker.top/high-power-bt-speaker-wireless-stereo-subwoofer-music-player-bluetooth-speaker/