Plantronics Voyager 510SL Earset - Mono - Wireless - Bluetooth - 10.06 m - Over-the-ear - Monaural SNR - Open. Stop juggling devices just to take a call! The Plantronics Voyager 510SL Bluetooth Earset System with Lifter lets users switch between calls from their desk phone and Bluetooth cell phone or other Bluetooth device with the touch of a button. Thanks to its inch smartinch technology, the Plantronics Voyager earset knows which phone or device to connect to, and with the included handset lifter, users have the freedom to take and end calls up to 33 feet from their desk. The earset's advanced noise-canceling and WindSmart technologies ensure that calls will be heard loudly and clearly every time.