Get customized sound without ever looking at your phone. Use the controls on the Smart Charging Case to adjust volume, EQ, control your music, take phone calls and see messages. Update the screensaver with your favorite photo. Enjoy True Adaptive Noise Cancelling and JBL Spatial Sound. Features 6 mics to ensure perfect sound quality when taking calls. 48hr charge with 12hrs of playtime in the buds and 36hrs in the case.