Just getting better with the best, you won’t get enough with the KDM W5-Airtwist experience of smooth & crystal clear audio with noise isolation feature. Switch to the fastest choice with the right functions hands-free calling, lightweight, and 24hrs music time. CHARGER : TYPE-C HANDS FREE CALLING : YES NOISE ISOLATION : YES TRANSMISSION DISTANCE : 32 ft. (10m) MUSIC TIME : 24 HRS WIRELESS VERSION : 5.1