HS820 works but volume levels are low. In a quiet room the levels are acceptable however in a noiser environment poor. The headset looses connection with the handset repeatedly over the course of the day. Also the SLVR had to be power cycled to reconnect to the headset some times. The blue LED is very distracting. Overall an inexpensive headset whose 29.99 price is really what it should be and never higher.