Review on 🏍️ GoHawk TJ4 2.1 Channel Amplifier 4-inch Full Range Waterproof Bluetooth Motorcycle Stereo Speakers Audio System AUX FM Radio for 1 to 1-1/4-inch Handlebar, Compatible with Harley, Yamaha, Can-Am, ATV, UTV, RZR, and Polaris by Lamont Wilson

This shows up as Bluetooth but I had to buy a separate Bluetooth addon to pair it with my phone and THEN connect it to the system. The speakers sound quite good overall for a while, but even with a 600-watt amplifier they start to distort a little when the volume is just over half the maximum level. The speakers blew up after just a few months, so they're not very high quality and short-lived. That's a waste of money.