Left ear of headphones volume low

you open your bluetooth device, and search you blutooth ear,
Amazon com YELLWWORSE Bluetooth Headphones V4 1 Wireless Sports Stereo...

While your headphones are charging press and hold the call button and volume up button and your problem is solved.

This worked for me! Just reset like the video. Had to do it a few times but working great now.

If they are Bluetooth headphones make sure they have fresh, fully charged batteries, go to System Preferences and open the "Bluetooth" panel, click on the "+" sign near the bottom left of the page and follow directions to pair headphones to your computer.

Unfortunately the ear buds are not made to be repaired, your best option is take them back for replacement "hopefully they are under warranty"

Probably can't. What typically happens is that the base of the wire gets stressed from wrapping the cord around you media player and it eventually breaks the copper wire inside of the insulation. You likely can not even see the damage, let alone repair it. Be more carefull with the next set, and might I recommend a set of AKG ear buds. I use AKG studio headphones and bought my little sister some AKG ear buds, very impressive quality very close to my studio headphones. AKG K 313

Your headset can be used as stereo headphones or a wireless microphone for a bluetooth enabled device like a cell phone or a computer. When you plug the headphones into a device with the 3.5mm jack the headset automatically turns into stereo headphones and disables the microphone(headphone mode). It sounds like whatever device your headset is connected to via bluetooth is using the wireless microphone protocol where sound only comes through the one speaker and the microphone is on(microphone mode). The bluetooth protocol settings of your device may have been changed accidentally. You will need to go into the bluettoth settings of your device you are using with your headset and change the protocol. If it is a cell phone you will need to go into the bluetooth settings in the settings menu. If it is a computer your can adjust the bluetooth settings in the control panel.

You can download the pdf file of your instruction manual for your headset here

I hope this was helpful and let me know if you have any other questions. Thanks for using FixYa

yes a coil can burn out in secounds i think you have better have the unit looked at by an technition

does the other buttons work play pause
if not then your phone most likely does not have

Audio Video Remote Control bluetooth Profile (AVRCP)

you can warranty them on there website. they will probably send you a new pair.