Short story: I bought five (5) of these--and will likely buy more! They are of unbeatable quality for the price and ideal for many different uses. But what makes these headphones really shine is their back-of-the-head design which makes them perfect for VR headsets!Long story:I've been looking for a new brand of headphones to replace my aging fleet of Sony DR-BT22 Bluetooth headphones which I have been using for just over a decade now. When these first came out there weren't very many quality Bluetooth stereo headphones available that could fold and fit in the palm of your hand. And with a reproduction frequency range of 17 to 24,000Hz the Sony DR-BT22's still remain some of the best sounding compact headphones around. But they are very flimsy and break rather easily. I've literally gone through over a dozen of these in the last ten years and their lack of longevity prompted me to finally search for a new model to replace my three remaining units that still function.Since the late 1980's my number one standard for headphones has been a frequency response range with a minimum and maximum of 20 to 20,000Hz. This is generally considered the audible range of human hearing. Second, I need headphones compact enough that I can take them everywhere and stash them in close quarters, like a jacket pocket or glove compartment. Lastly, cost: I use multiple sets of headphones for different equipment (computers, cell phones, VR goggles) and different locales (home, work, on-the-go)--so they need to be cost-effective enough that I can purchase multiple units.Enter the Besign SH03: they fit all my criteria, and they sound really good too. Now, even though 20 to 20,000Hz is what the majority of us can hear, each person's hearing is different. So sound quality is really a matter of individual acceptance. The Besign SH03's aren't in the same universe as a Sennheiser HD 650, and they don't sound quite as rich as the Sony DR-BT22's...but they don't need to be either for my daily use. That said, I do find that the Besign SH03 at louder volumes to maintain fuller over-all sound than the Sony DR-BT22's, which tend to rattle more as you oomph up the decibels (probably due to the fact that the construction of the Besign SH03's is much more sturdy and tight than that of the Sony DR-BT22's).And while we're at it, there are two other things that the Besign SH03's are better at than the Sony DR-BT22's: (1) they charge using Micro USB as opposed to Sony's proprietary AC charger; and (2) they fit on the back of your head as opposed to on top of it--this makes using VR goggles much easier and less cumbersome. There's nothing quite like watching Avengers: Endgame on a VR headset using these headphones. And at a cost of under $25 per unit, I purchased three specifically for the three VR headsets that I own...then I got two more to swap during the week listening to music and taking the occasional phone call on at work.I can't say enough about these headphones. They are really a great find here on Amazon. And if you register on-line you can get two years of warranty service on them from Shenzhen Besign Technology Co. Ltd. It's refreshing to have a company that actually communicates with you--I've had a dialog with them for the past couple of days since registering.But as I said, it's really all a matter of individual acceptance...so get you a pair and try it out. For the price and Amazon's return policy you can't go wrong!