I did a lot of research and decided on this model. I'm so glad I did. I work from home and I am on the phone several hours a day. This unit is replacing a 4 year old DECT headset that supported both my desk phone and computer. First, what this phone is not - it is not a stereo headset for listening to music. That's not what I was looking for anyway. IMO, music listening is a different (mutually exclusive) requirement. To drive low frequencies accurately you need more power to push air. You would need more battery.This product is not designed for that. Sound quality - Out of the box, there was a slight hiss when the line was silent. But it has several adjustments to tweak the volume and frequency range (wideband / narrowband). Level 2 volume and wideband frequency gave me optimum setting. I have tested it now for all three connections and the sound quality is very good. Easy switching between computer, mobile phone and desk (landline) phone - I have set my computer audio to be my default line. So when I press the on button on my headset, it turns on the computer line. You can change it to either of the three connections (computer, BT, or desk phone) by pressing and holding the line button on the base. The best part is that if I get a mobile call, I can just answer from the headset. It knows that there is an incoming call on mobile so it connects you there instead of the computer. Bluetooth - Contrary to what some folks claim about poor quality BT connection, my Samsung GS4 connected easily and my mobile calls are equally good. Granted I work from home and have only a few other BT devices. So someone in a very crowded space with hundreds of such devices competing for airwaves may have a different result. Nifty splitter cable for desk phone - It comes with a Y splitter cable for connecting to your deskphone and its handset. Now I can either answer the call by lifting the handset (which I rarely do - probably never with this headset) or just pressing a button on the headset. Very good battery life and two batteries - I charge both batteries overnight. It has lasted over 6 hours total with about 50% time talking on the phone and I still have 25% juice left. If needed I should be able to switch the battery by putting the call on hold for about 5-10 seconds. Wearing options - I was quite impressed with how thoughtfully designed wearing options are. I had used over the head band before and wanted to try other options. Behind the head was most attractive since it seemed to stay out of my glasses. But I decided to ditch it after a few hours. This or other over the ear options may be good for people who don't have glasses. I ended going back to the traditional over the head wearing option for its secure feeling and very little pressure on or around my ear. I have a big foam cover to give me more comfortable feel on my ear. Other options couldn't beat that. Anyway, I think most people will find one of these options very comfortable. Last but not the least - the Plantronics Control Panel on my PC is quite user friendly. The best part is that it tells you how much battery power is remaining. So you can switch the battery in advance of it getting too low.
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