The Volas Portable Bluetooth Karaoke Speaker with Microphone is listed with 360° surround sound, a wireless karaoke microphone included, IPX7 waterproof and durable design, Bluetooth, FM radio and TF card compatibility, plus a portable rechargeable battery with LED lighting. There is one default variant.
The page does not name a pairing code or an app. Use the in-box steps to charge and connect. IPX7 is the written rating; the page does not say you can submerge it for a set time.
See the Volas karaoke speaker in Electrics.