JBL Signature Sound - 40mm drivers and sound signature is found in the most famous venues around the world. Adaptive Noise Cancelling - keeps the noise away so you focus on the music. Ambient Aware allows you to safely walk with increased ambient sounds. TalkThru - music lowered and speech amplified to hear without taking headphones off. Hands-free calls with built-in mic. Up to 50 hours of battery life (40 hours on ANC). Comfort-fit fabric headband and soft ear cushions. Soft carrying pouch. JBL Headphones app personalizes sound set Voice Assistant and more. Rechargeable 750mAh 3.7V Lithium-ion polymer battery. Includes Audio cable and Charging cable.