It seems like a reasonably good headset. The sound is very clear and it works very well with my Sony C902. I do not really like having things in my ears, but it's a bit of a necessity when driving, in order to stay legal. It's quite comfortable and very light and everything works as expected. The buttons for turning on and off, Starting and Ending a call and Volume control are easy to find and tactile enough, so you can be sure you're pressing the right one and getting the required action. Battery life is very good, I use mine twice a day for approx 2.5 hours stand-by and with maybe 30mins of call time per day and it lasted two weeks between charges after the second charge. However, I've only given it four stars because of two minor issues. These may or may not be of concern, but in my opinion they do detract from the product slightly.
1# The clip-on ear clip. It seems very flimsy and I can imagine that this'll be the first thing to break. Once that happens #unless spares are available) the product will be virtually useless, as it won't stay in my ear without it. I think Motorola should have provided a spare or two, as it must only cost a few pence to make.
2) The unit must be placed in the charging bay to charge and has a useless and stupid plastic lid, why? It uses a Micro USB connector, but utilizing the docking bay in a car would be highly impractical without somehow fixing it to something horizontal and discarding the useless lid. However, as you're not provided with a car charging adapter, there is no real way of charging the unit on the move without purchasing a micro USB car adapter. In contrast, The Jabra BT500, which I also own has a charger with a firm push fit and a belt clip. It was supplied with both mains and car adapters and cost me less, pity it falls out of my ears!
Even with the above two minor flaws I can highly recommend this product as it does exactly what it is designed to do and does it very well.