Plantronics BackBeat Pro Bluetooth Noise Cancelling Headphones Black [Refurbished]Create a longer playlist. With up to 24 hours of continuous music streaming, BackBeat PRO outlasts most playlists and movie queues. Power saving features include automatically pausing the streaming audio and active noise canceling when you slip off your headphones and a DeepSleep hibernation mode. When the battery finally runs low, switch to the cabled connection to keep listening longer. Immerse yourself in music. Our signature audio performance