








🎶 Hear more, miss less — the open-ear audio game-changer!
The MonsterOpen Free AC100 are open-ear Bluetooth 5.3 wireless earbuds featuring dual 16mm drivers for immersive stereo sound, AI-powered noise cancellation, and a remarkable 30-hour battery life. Designed with earhooks for secure fit and waterproofing for active lifestyles, these earbuds deliver crystal-clear calls and ambient awareness, perfect for professionals on the move.






R**S
Great headphones
These are great headphones! They are very easy to use. The directions were easy to understand and follow. Connected easily to my phone. Held charge for quite some time. Not much background noise. The quality of the music is superb. Great quality for a cheaper price point. Highly recommend.
S**N
Long lasting, great quality, and comfortable
Love these! I have small ears and struggle with finding in-ear ear buds that fit. I have hours of conference calls a day and over the ear headphones just make my ears sweat. However, these are the perfect! They fit nicely on my ears and are really comfortable. The sound quality and audio is great. And the battery lasts a long time. Great value for the money as well.
G**R
Great set
This was my 1st pair of bone buds. The battery lasted a few days. The sound was decent. They had trouble staying on my right ear idky. They're lightweight. Anyway, I work in a lab...if they'd fall off they'd get kicked. Eventually that right bud came apart and had a mind of its own. Good set for a 1st pair to see if they suit you.
R**F
no good
One earbud died after using just a few times, convenient but poor sound quality and not very loud.Update: emailed the company and got a blow-off email, said someone else made it, and they didn't support them. do not buy!
G**Y
Not comfortable but great sound.
Not as comfortable as my 1st pair from another brand. After about 5 hours, my right ear starts to hurt on the backside. That has never happened with my other earbuds. The difference is the price and therefore quality. The sound is great but I prefer comfort because I have to wear them for long periods of time. Also, it's not as easy to control the volume. The battery does last in the case. I can recharge the earbuds several times before I have to connect the case. These also don't disconnect as often as my other ones.
B**A
The fit is just right
I love the way these lay in front of my ears and the sound is so clear, no more ear problems and cleaning of the bluetooth ear pieces any more.
M**P
No way these are regularly over $100 ear buds.
These are solidly made, but the sound is sub $20. They sit on the ear, which is cool, however, according to my wife, she can hear them better than I can when she's sitting next to me--not wearing them. What is the point of ear buds that other people can hear? Especially if the volume level is such that you can barely hear it while other people can hear it? I put the music to comfortable level and she told me the name of the song and sang along. Lol. By the way, I don't have hearing issues. I kept lowering the volume until she could no longer hear it--problem was neither could I.
A**R
Great Pair of Headphones
Excellent value for the money. I can now watch tv while people are talking without having to raise the volume.
Trustpilot
5 days ago
2 weeks ago