JBL - Link up to 100 JBL Connect+ enabled speakers and amp up your party with the new Flip 4 – the award-winning waterproof Bluetooth speaker. | Facebook
How do you connect multiple JBL speakers to each other? - Coolblue - anything for a smile
How to Pair JBL Flip 4 with Bluetooth Device - YouTube
How to Connect a JBL Speaker with a Smartphone/Computer? - ElectronicsHub USA