Incredibly useful, has couple of simple design and user interface issues that needs to be addressed. It's a fantastic product that I use everyday, this is the second one i bought. the first one's pocket clip broke off (the plastic and tiny metal hinges are too weak). When recharging, you have to be able to press "OK" after you insert the device to USB port to charge. That causes quite a bit of headaches if your USB receiver port is wrong side up, as it is on my laptops. They need to make it where it will charge as soon as it's inserted, without having to confirm.

I have been an audio guy for more than forty years, and I own several Olympus recorders, from their basic ones to their high-end PCM models. No one does a better job on these than they do, not even Sony (and I own lots of Sony gear, too). More than a decade ago, Panasonic made the RR-US006 slim pocket recorder whose downfall was that it was an IC (integrated circuit) recorder and required their proprietary software to offload the files. But it was the only pocket recorder on the market, and I still have mine. I am sure I wasn't the only one to do this, but I hounded Olympus for years asking them to make a shirt-pocket recorder geared toward the professional who would carry it alongside their Cross pen and tablet stylus, and I can't believe that they actually did! There is nothing else to say except that it is as perfect as all of their other recorders are with the addition of being super practical for those of us who are constantly wanting to capture thoughts and ideas and even conversations (disclaimer: as long as it's legal in your state to do that). Having said all this, this is a more specialized recorder and may not have the kind of wide appeal that will encourage Olympus to carry it for very long, so if you are even remotely interested you should go ahead and get it just as I did.