Question: are jbl charge 3 and charge 4 compatible?
Answer: On paper, you'll notice that the JBL Charge 4 has Bluetooth 4.2 instead of the older 4.1 which is nice, but the real differences have to deal with JBL Connect. ... Unfortunately, if you bought an older speaker with the regular JBL Connect (like the Charge 3), it isn't compatible with this new plus version.