The Plantronics Voyager Legend UC B235 Standard Wireless Headset is designed for mobile professionals. It affords wireless connectivity to your PC, smartphone or tablet via Bluetooth 3.0 + EDR. The headset features Smart Sensor technology that automatically adjusts the headset settings and functions according to your needs. It also features voice alerts and supports voice commands. The headset supports up to seven hours of talk time and 11 days of standby time. However, when used with the included portable charging case, you can add an additional 14 hours of talk time. The Voyager Legend UC Headset is equipped with three precision-tuned microphones that effectively cancel noise and wind. Plus, a convenient desktop stand is included as well.