Review on Black JBL T450BT On-Ear Wireless Headphones with Built-In Mic and Remote by Som Chai ᠌

After charging, they hang every time. You need to hold the power button for a VERY long time so that the headphones turn off, and then you can turn them on to listen. If this is not done, then they will remain stuck. If done, they turn on normally and will work, but only until the next charge. Then everything will repeat. Didn't expect this from JBL. Judging by the reviews on the Internet, this is a fairly common glitch. The firmware of the headphones is not ated, so if they are buggy right away, they will always be buggy.