JBL Portable Speakers JBL Portable App Use JBL Portable app to get updates, product support and unlock functions, all straight from your phone. Fine-tune your audio with multiple EQ preset options. Or choose a fully customisable equalizer to adjust high, medium and low tones - so that your music is right for you. Battery Life To make your speakers last longer, charge the battery completely at least once every 3 months. Note:Battery life varies depending on user settings and environmental conditions. Number of power cords and plug varies by region. Listen to your way Stream all your favorite songs wherever you are with fast connectivity and crystal clear sound, thanks to the JBL ONE app or the built-in music services.