Builtin microphone enables hands calls, so you can answer and talk without holding your phone. Builtin battery lasts up to 16 hours, providing longlasting use between charges. Latest noisecancelling technology delivers clear call quality by reducing ambient noise. Can pair with two wireless devices at the same time, allowing easy switching between devices without repairing. Use scenarios On the go: answer calls hands while commuting or walking, keeping both hands . Remote work: stay connected to your phone and computer simultaneously, switching between devices without reconnecting. Travel or busy environments: use in noisy spaces (airport, cafe, etc.) to maintain clear communication with effective noise suppression. Key attributes Function: hands calling with builtin microphone and long battery life. Compatibility: supports dualdevice pairing for seamless multidevice use. Performance: noisecancelling technology enhances call clarity in common environments. Duration: up to 16 hours of battery life per charge.