Anker Soundcore P41i EarPhones With Built-in Lightning AdapterAnker Soundcore P41i EarPhones With Built in Lightning Adapter Ultra Long Battery Life: Listen for up to 12 hours on a single charge; the case extends it to 192 hours. A fast 10 minute refuel gives you another 5 hours of music. Adaptive Noise Cancelling: Monitors your surroundings and utilizes advanced algorithms to mute all noises for peaceful journeys. Thunderous Bass: soundcore P41i's 11mm composite drivers deliver captivating sound, paired with