JBL Flip 6 | Portable Waterproof Speaker The JBL Flip 6 is IP67 waterproof and dustproof, so you can use it wherever you go. It takes about two and a half hours to charge the Flip 6, and the device still works while it is charging. JBL speakers may automatically shut down after around 10 minutes if you do not connect them to a device if they are not connected to any device. The battery life can also be monitored with the JBL app, even though the LED light isn't very useful until it's near death. These gadgets save energy in this way.