Review on Kayinuo IPX7 Waterproof Shower Speaker with Enhanced Bass and Built-in Mic - Portable Bluetooth Speaker for Outdoor Adventures by Ashley Lanier

This is the only BT speaker with an AUX input that will also NOT enter Bluetooth pairing mode when not connected to a Bluetooth source. It is amazing that 90% of Bluetooth speakers these days will simply try to pair with NOTHING when not connected to a Bluetooth source and there is no way to disable or exit this mode. This is a huge security risk. Luckily the Kayinuo is different and so far I haven't seen it try to pair with anything when connected via the auxiliary audio input. Great design. and a great purchase for those who care about safety