This is going to be a very honest review. There are some pros and some cons to the headphones I received. I'll start with the cons. On my 2nd week of use, the left side earbud began having some issues, there was a loud static sound that would come and go and eventually that side stopped working all together by week 4. To be honest though, I can't rule out that my toddler didn't contributed to the issue as she's pulled on it a few time and is kind of obsessed with them lol. The other con is the lack of noise canceling, people have a hard time hearing me if I'm in a noisy room and I cannot run water or clean dishes while on a call because the running water apparently sounds overwhelmingly loud to the person on the line.Now that we've got the cons out of the way let me tell you what I love about this headset.1st it is so comfortable and convenient. I love that I can wear one earbud in and let the other hang so I can listen to whatever I want and still be aware of my surrounding sounds (my children). I love that I can't lose one as they are attached to the neck rest which is also lightweight and comfortable to wear. The earbuds do not hurt my ears as some others that have left my ears sore.2nd the battery life is out of this world. I lost count of the hours (days) that I've used them and still had not fallen bellow 50%. If I remember correctly they came with 80% battery life. I used them for 2 weeks and only charged them for the sake of testing the charger because I still had 50% battery life. I've now had them for about 2 months and have only charged them 2 times. I don't mind the one side not working because I never use both sides at once anyway. Beside the lack of noise canceling and the loss of use on one side (that could have totally been the work of my earbud obsessed 1 year old) I love these earbuds for their practical use and mega long battery life.I've been on the hunt for behind-then-neck earbuds with decent battery life for years. I listen to audiobooks and podcasts every day and I usually have one set of headphones charging while another is in my ears. These are absolutely the headphones with the best battery life I've ever seen. I usually have to swap my headphones onto a charger once a day (sometimes twice on the weekends). I've had these headphones in for 6 days (all night and most of the day) and the battery says 70%. It's ridiculous battery life. It's almost too much. It's not just better than every other pair of headphones I've bought, but it's like literally 700% better. i've dropped 100-200 dollars on headphones before with a fraction of this battery life. I immediately ordered a second pair as a backup.There's lots of other little benefits too. When you power it on, it starts right up and pairs immediately. (In contrast to some of my other headphones where you have to hold the button down and it takes a while to pair). The volume can go fairly loud, which is great, because it gives you lots of control .The ear buds and little tips aren't my favorite, but they never hurt my ears. I tend to sleep with my earbuds in and many other headphones will start to hurt my ears in the middle of the night or when you rest your head on the pillow. These don't do that. I can pop them in my ears and put my head on the pillow and it's perfectly comfortable. They just feel a little weird to pop in initially.The audio quality is not especially great. It's totally fine for podcasts and audiobooks, but if I was listening to music, I might want something with better audio quality.That being said, I couldn't be happier with these. It puts every other pair of headphones to shame and major manufacturers like Sony should feel embarrassed that they can't even come close to delivering this amount of battery life on ANY of their headphone lines.I was blown away how well these, Wireless Earbud Neckband Headphones Sound. I have purchased more expensive brands in the past, and I am completely Satisfied with the Quality of how well these are made and Sound. The battery life is like nothing I’ve ever seen before either. I changed these Headphones up when I received them, and I did not have to charge them again for another 5 days. I literally wore these for 5 days of use, and I simply and whole heartily recommend these, for anyone who are looking for wireless Headphones that sound amazing, are well made, and have a Monster of a battery,No me sirvió y ya no puedo regresarlo solo estuvo funcionando por dos meses más o menos e tenido dos antes y me han durado por dos años más o menosThe headphones don't get quiet enough. On the lowest volume setting, they are still to loud to comfortably use in an environment with no background noise. I normally use them on my motorcycle, so they're great for that, but not for normal listeningUpdate 10/7/2021After 3 months +/- I gonna drop my star rating.1) It randomly shuts off when pressing the play/pause button and volume up button.2) It will no longer charge beyond 20%. I've tried multiple cables and chargers and even bought new ones just in case they were bad. Nope. Charged for almost 18 hours and still didn't go over 20%.So I'll give it a 2 start eating because they were fantastic until they weren't. LoL.I have not ran the battery down yet. I've used it for 50-60 hours of non stop music through the week at work. So I'm going to say it is safe to say that the 120 +/- hours of streaming is correct. They are nice and loud. Good base.Things that could use improvement:Could use more high range sounds.A cover over the charger port.Lay out of the buttons is odd.Battery level displayed on the phone when connected instead of just a 10% warning. Found this out because I didn't charge them before connecting them.So all in all a really good head set especially especially the price.Worked great for several months until the buttons got weird, but I did drop weights on it