Couldn't figure out how to make these work. Finally ...
341910
Couldn't figure out how to make these work.  Finally opened them and found a piece of cardboard inbetween.  They are very bright for little lights!
2494799
a bit confusing about how to put on and I emailed 3M and got no response.  Finally figured it out.
1932046
Awkward to use. There must be a technique I don't know.
1862870
I couldn't figure out how it worked, which forced me to go back to my old one and fix it.
1111918
took me a few min to figure out how they would be used - haven't used them yet - have to cut some runs for the lights first
2698154
No  instructions came with how to install these. It took me a few times to get it right and a number of youtube videos to figure them out. But now they are on and work great!
4044663
Couldn't figure out how to get it to work.  Followed the instructions a couple times.  Just think I either did it wrong or it wasn't compatible with my vehicle.
520490
Seemed very well made, I returned them because I either missed the description or it wasn't there...probably my fault but I cannot give an honest review of something I was unable to use. If you have:  https://www.amazon.com/dp/B06XDZTCL1/ref=cm_cr_ryp_prd_ttl_sol_94r  FYI: these do not work.
3635788
Have been unsuccessful getting these to adapt to my work Laptop.  Even got assistance from the IT staff at work and they could not make them work.  If set up this going to be this difficult, I will have to return them and get a wired set of headphones.
2931501
Well they kinda worked, once.  The instructions on how to wear them are non-existent  Good luck trying to get them to stay in/on your ears.  Connected them the first time fine, after that they cannot be found by any device.  Junk.
3354862
couldn't figure out how to use this...anybody know?
3094181
No matter the directions i STILL cannot get these on correctly, and I'm a geek.  Not this products fault I guess, so I'll give it a 3.
4408518
There were no instructions on how to use these add-on lenses.  Finally found what I needed in the Expanded Guide
3094014
Flimsy construction but was able to get them to work.  Difficult to adjust and keep adjusted.  Would think twice before recommending them.
1426189
It's kinda hard to figure out the set up, it's a little weird but once you do get it figured out, it works
4275398
No directions and is not just simple to use so I have tried to use them and not been able to because I can't set them
4886809
I bought these not realizing they wouldn't fit my chairs so I have no idea how they would work if I could use them.