JBL Pure Bass Sound - 10mm dynamic driver delivers bold sound. Up to 10 hours on a single charge - additional 40 hours with storage/charging case. IP68 Rated dust and waterproof. Ambient Aware & TalkThru. Dual beamforming mics ensure clear communication. VoiceAware - choose how much of your own voice is routed back into earbuds. TwistLock ear hook enhancer ensures earbuds will not fall out. JBL Headphones app - personalize settings to suit your needs. Up to 2 hour charging time. Includes: USB Type-C charging cable. 3 Eartip sizes. Enhancer.