I bought these for my dad about three Christmas' ago. He loved them so much he bought his brother a pair ( they are both in their 70's). I recently purchased a pair for myself for traveling and I love them because of the neck strap and it just puts my mind at ease. I know to many people who only have one ear bud

Great sound, automatically answers the call when you put them in your ears. Blocks back ground noises with noise cancelling feature, water resistant and also works with android.

Update:
Knocking a star off. Still a decent headset. Discovered a couple, to me, significant deficiencies, since my original review.

1) Battery life is far lower than rated 12 hour. getting about 8, maybe. Mostly listening to podcasts.
2) Lack of low battery warning. If there is one, I never heard it. The other earphones I have used all have clear warnings , usually stating '20% battery remaining' and such. I have not had any warning, and ran out of battery 2 times so far.
3) the buttons on the neckband are really not logical, or marked what they do.
4) battery indicator is on the other side of the neckband than the charging port. Not a big deal, just odd.
5) no 'over top of ear' wire routing like others I have used. Just a preference.
6) I miss having an add-on charged battery to greatly increase the use of the product without having to find a charging port. Not easy when out of the home/car.

On the positive side, I have found the phone function and quality is very good. No complaints from anyone I have talked to about the sound quality on my end. Most headsets I have used were bad to very bad. These are very good.

From a dead battery, I charged about 20 minutes, got about 20% battery (according to the app). I guess that is pretty good. Using the headset as i type. Battery is now 15% after about 25 minutes of use (podcast listening)

Still don't like the neckband. Prefer over top of ear, tight around the head wire style with nothing on my neck.

Still, the sound quality for music, when equalized using your music app, is very good. Sound and mic quality are very good for phone.

The business end of this set is there.

Original review below:
Coming from an older pair of similar Jaybird headphones. Purchased these because they seemed similar.
Seems a lot of review are doing pros and cons. Seems reasonable. Impressions below pros/cons.

Pros:
lightweight
fits my ears
fast charging
simple controls (also a con)
good sound..well..after using your music app's EQ to adjust to your hearing level
phone/mic seems very good.

cons
disposable product. No adding/changing batteries that I can see.
during quiet songs, you can hear sound transmitted from your clothing, etc. Not terrible. Just something new and odd.
non-intuitive simple controls (simple to learn, however)
no app to fine tune the headphones to your hearing level and tones to your ears.
out of the box, sound is flat and zero bass. using your music app like Amazon Prime Music, you can tune an equalizer and greatly improve the sound
relatively low volume
not crazy about feeling the cord on my earlobes and the band on my neck.

Impressions:
Not bad for the price. Initially, I thought they were horrible. Turned on the EQ in Amazon Prime Music, which fixed that ! Out of the box , the sound is unimpressive, to say the least. Not crazy about the semi-rigid band. I liked the all wire of the Jaybird, as you could have it conform to your head with no movement for a real nice fit, making you even forget you had them on. These, you always know you have them on, as you can feel them on your earlobe and on your neck.

Even with the annoyances, will give it 5 stars. Will revisit the review if there is any significant update

Nutshell, they are almost identical to a $15 set I have, in all respect except these do sound a lot better. Is it worth the price... ehhh I don't know. As I listen to music writing this, I am liking them a LOT less than my old Jaybird Freedom. The sound quality (after setting up the EQ) is better, however, but the neck band is getting more annoying

TLDR: these were my favorite earbuds until I upgraded to the AirPods Pro. On a budget? Get these.

Pros: magnetic earbuds so they always close around your neck, long battery life, ability to seamlessly switch between devices (2 max)

Cons: cord between earbuds gets tangled in my clothes, ear tips cannot be replaced

When I'm on the go, at work, or just casually listening around the house these have been my go to headphones for a variety of reasons.

Sound: They sound just fine. Not great, but not so bad that its too bad to listen to your favorite songs. I use Sennheiser HD600s at my desk and these are no where close but for a cheap set of bluetooth headphones they are totally passable. I normally listen around half volume which is plenty loud at least for me. Full volume is painful, I see other reviewers complaining about the battery life at full volume and I have to wonder what their hearing is like.

Battery: These will get me though a 12 hour shift, admittedly not listening to music the whole time and through a few hours of YouTube or TV when I get home. They charge extremely quickly too when the battery gets low. If I forget to charge them over night I can throw them on the charger for a few minutes at work and be fine for the rest of the day. The USB C port is annoying, I have an iPhone so I have to have two cables, but I also carry a USB C external SSD so I just use the cable from that with my laptop.

Noise isolation: These things SHINE at passive noise isolation. Its like you have reusable earplugs in that just happen to have drivers. I work on cars a lot and work in a machine shop, so hearing protection is something I need to be wearing most of the time and something I want to have easy access to at all times. If I don't have my beats in my ears they're around my neck almost all day so if I'm about to do something I think will be loud, blowing out a hole with an air hose for example, I can throw them in my ears in seconds and have a decent level of protection. I wouldn't use these at a gun range but for me on a daily use basis they work great.

Fit and comfort: When I'm running or working under a car the neck part likes to fall off. To get around this i put the headphones on upside down, with the usb port facing up, and then cross the ear bud cords in front of my neck so they still go in their respective ears. This is not how I normally wear them but it does work if I find myself in that situation. I had a set of airpods and they kept falling out of my ears, I switched back to these tethered style earbuds after one of my airpods fell out of my ears into a coolant tank. These stay in all day no problems because the majority of the weight is around your neck and not hanging out of your ears.

Only part I dislike is the magnet in the buds, It attracts metal and gets stuck to stuff if you lean over. I don't think they're necessary but that's a monitor complaint.