Battery lasts up to 4.5 hours of audio on a single charge and up to 5 hours with Active Noise Cancellation and Ambient mode turned off. Features Active Noise Cancellation function. Customizable fit and isolation. Ambient mode. Adaptive Equalization. Automatic activation and connection. Fast charging in the case. Automatic configuration on all Apple devices Black internal speaker. Setup with Siri. Play your music or switch with two taps. The case charges via lightning cable or wirelessly using a Qi-certified charger. Features audio and voice. Bluetooth 5.0 connectivity