I've been using the SAVI 745M for almost 4 years now, and I can't say enough about it. It makes managing multiple call avenues very easy, as it links to my desk phone, my cell phone and my Skype for Business calls all at once! Plus I can walk all around the office and far out into our trans yard without sacrificing call quality or my call dropping. It truly allows this IT guy to take calls while unchaining me from my desk do desk side support for my users without missing a beat (or a call)! If you work in an environment where you need to be able to answer calls from multiple sources, to move around your workspace unhindered by wires, or go long distances from your desk while on a call (or you could need all of these things like I do, too), then the SAVI 745 is an indispensable addition to your repertoire. Try it, you won't be sorry.