Active noise cancelling (ANC) technology puts the control in your hands High-performance 13mm driver unit delivers balanced audio consistently Bluetooth V4.2 with CSR technology Lightweight neckband supports all day comfort Bluetooth connects up to 10 meters Up to 8 hours of continuous play Highly portable and designed seamlessly with three discreet buttons to take voice calls, adjust volume or select music Supports connecting two Bluetooth devices simultaneously Enables smartphone voice control function when paired