Playback- Keep yourself plugged all day as the Airdopes 441 provide upto 5 hours of sound per charge and an additional 25H of playback bliss with the carry cum charge case..Note : If the size of the earbud tips does not match the size of your ear canals or the headset is not worn properly in your ears, you may not obtain the correct sound qualities or call performance. Change the earbud tips to ones that fit more snugly in your ears