I was provided this device by my employer to use with my Cisco IP Phone. What follows is a review I wrote for my Strategic Sourcing Group.OK I have had a week and a half to play with this device.At first it installed and worked well. The one immediate drawback is that it does not work with Both the physical and the soft phone like the one I originally ordered. It is only Soft Phone compatible. Also, I immediately noticed how difficult it is for me to rear the other end unless there is no background noise at all.Pros:* I am being told the sound being delivered to other parties is EXTREMELY clear and has no delay.* It is very light weight on the ear and comfortable to wear for extended periods of time.Cons:* It doesn't work like the manual states.o USB Charging does not Worko Blue Tooth Binding Keeps disappearing. I have to redo it every day and it takes several tries.* The volume the users hears doesn't go loud enough. I have to strain to hear if there is any competing back ground noise.* The device is HUGE for traveling and packing in a laptop bag. It is about 4 times larger than the other model.* The bag they provide to put the pieces in for travel is too small to put the device in.* The ear piece pops off too easily and can get lost.* Stored settings, like volume, have to be reconfigured every day.Essentially I started out really liking this unit. Now I hate it. So far today I haven't even been able to use it because it won't charge at all, even on AC. If you put it on your ear it does a triple beep every few seconds. Incredibly annoying. What is even worse is that now I am 100% dependent on it for a phone now because my desk phone disappeared during the cubicle moves. So now it is my only "work" phone and it doesn't work.Is there any way I can just get the device I originally ordered? I desperately need a head set for all the hours I spend on the phone. This one is just not reliable enough to be used, nor is it practical for mobile users, it takes up half of my laptop bag.