Pairing the FS’s is as easy as most other Bluetooth headphones. The buttons are easy to find and use while wearing the headphones and provide a soft but reassuring click. They offer plenty of output even for the most demanding listeners. I found sound quality with these headphones to be inconsistent. Some songs sounded horrible while others sounded decent. There is an obvious lack in high frequencies which I believe is a trade off for them being waterproof. I believe the inconsistent sound quality is also a result of them being made waterproof. The area that the ear tips snap onto has been covered in a heavy material which I believe is the cause to the distortion and reverberation.
If you are looking for great sound quality and do not need waterproof headphones I would recommend looking elsewhere. If the idea of waterproof headphones appeals to you than these may be exactly what you are looking for.
If you are interested in the iJoy FS Headphones they can be found here.