Download the JBL Portable app to get the most out of your JBL portable speakers and unlock more features. Compatible with the following speakers: - Flip 6, Flip 5, Flip 4, Flip 3 - Charge 5, Charge 4, Charge 3 - Pulse 4, Pulse 3, Pulse 2 - Xtreme 3, Xtreme 2, Xtreme - Boombox 2, Boombox App features: - Connect to compatible JBL portable speakers for Stereo to amplify sound or Party mode for a bigger party - Personalize and control your speaker straight from the app - Get additional software updates and product support