These are great headphones. The sound is good with deep rich bass and excellent detail in the high and mid range. My hearing is not good and I like my music loud. Even so I have plenty of volume and even have to turn it down a bit. I did experience some obnoxious crackling, but I was able to get it to stop by switching to noise cancelling mode. They connected easily with my phone. The Bluetooth connection is perfect with no dropouts even when I am across the house from my phone. The ability to connect with an audio cable (included) is much appreciated. It charges with a standard micro USB cord, another plus. They fit over the ear well, and the padded ear cups are very comfortable. Even without noise cancelling they isolate you from most outside sounds. The headband adjusts easily on both sides for a comfortable fit. The controls on the right speaker are easy to use. From here you can adjust volume, skip forward or back, pause, turn noise cancelling on or off and power the headphones on and off. The case is very nice. It is not difficult at all to fold the head phones to fit in the case. I just wish it had a compartment for the audio and USB cables. I listened to them for an hour, so they hold a charge at least this long, probably much longer. The included multi language instructions are brief. but clear and easy to follow. #RankBoosterReview. #Sponsored. #BluetoothHeadphones https://www.amazon.com/Cancelling-Bluetooth-Headphones-Microphone-Cellphone-Black/dp/B074TF4Q3V/ref=cm_cr_srp_d_pdt_img_top?ie=UTF8