The BH71 wireless business headset offers high-definition audio quality while in the car, on the train, or in the office. It can be connected to your smartphone, desk phone, or PC. With its 4-mic beamforming noise cancellation technology, you will always be heard clearly. The BH71 also includes an adjustable ear hook to ensure comfortable wearing, allowing you to easily personalize the fit to your ear. Whether you are on-the-go or in the office, the BH71 provides a 10-hour talk time to ensure all-day use.