

🎧 Stay open, stay connected, stay ahead.
The Monster Open Ear AC210 headphones deliver a unique open-back design for all-day comfort and situational awareness, powered by Bluetooth 5.4 for stable wireless stereo sound. With an impressive 30-hour battery life, fast Type-C charging, HD clear calls, touch controls, and IPX5 water resistance, these earbuds are engineered for professionals who demand freedom and reliability in every moment.


















| ASIN | B0D8BKWK71 |
| Age Range Description | All Ages |
| Audio Driver Size | 12 Millimeters |
| Audio Driver Type | Dynamic Driver |
| Battery Average Life | 6 Hours |
| Best Sellers Rank | #99,196 in Electronics ( See Top 100 in Electronics ) #811 in Open-Ear Headphones |
| Bluetooth Version | 5.0 |
| Brand | Monster |
| Brand Name | Monster |
| Cable Features | Without Cable |
| Carrying Case Color | Black |
| Carrying Case Material | hard plastic |
| Color | E29black |
| Compatible Devices | Bluetooth-enabled devices |
| Connectivity Technology | Bluetooth |
| Control Method | Touch |
| Customer Reviews | 3.8 out of 5 stars 632 Reviews |
| Ear Placement | Open Ear |
| Earpiece Shape | open-back |
| Enclosure Material | Plastic |
| Form Factor | Open Back |
| Frequency Range | 10 Hz - 22,000 Hz |
| Headphone Folding Features | Open Back |
| Headphone Jack | USB-C (for charging, no audio) |
| Headphones Ear Placement | Open Ear |
| Headphones Jack | USB-C (for charging, no audio) |
| Is Autographed | No |
| Item Weight | 0.18 Ounces |
| Manufacturer | Monster |
| Model Name | AC210 |
| Model Number | Monster Open Ear AC210 |
| Noise Control | None |
| Number of Items | 1 |
| UPC | 810079701742 810079700844 |
| Unit Count | 1.0 Count |
| Water Resistance Level | Water Resistant |
| Wireless Technology | Bluetooth |
J**O
Don't buy. Stopped working within 2 months
I loved these at first. They are comfortable, loud and clear. They connect easily to Bluetooth. They charge quickly and last a long time. However, within 2 months one day they just stopped charging despite changing outlets, cords and charging blocks. They then became useless because they wouldn't charge and were now completely dead- literally. If these lasted at least 9 months I wouldn't be so angry but in 2 months they are trash and that's unacceptable.
M**Y
Great sound and comfortable.
These headphones sound great. They are comfortable to wear and easy to pair with my phone. I didn’t realize these were “over the ear“ earphones. I wanted to use them for listening to books in bed. But the sound can be heard beyond my ears. If this is not an issue for you, it’s a no brainer to buy. Good for online meetings and listening to music.
D**O
Rich music, clear phone calls, no pain
I was shocked the moment I took out the product. Not only were the ear pieces extremely light so was the charging case. I own the JVC near ears & had no complaint but wanted to try the Monsters out. The sound is richer and more clear. The thin flexible piece that goes over the top of you ear makes you forget they are even hanging. My wife called me while I was listening to Pink Floyd. It was the CC cleariest I have heard her voice in ANY wired or Bluetooth headset ever. These are so good AND less expensive than my JVC I am ordering several more for Christmas Gifts. Monster did it again at a great price!!!
N**A
Too quiet, one didn’t charge
So it’s the holidays and I am purchasing multiple types of earbuds to give to relatives out of town so as a result, I am testing them out and making sure that they all work well before I send them off. This is one that I tried and being that it’s Monster I thought that it would work out pretty well. I have purchased Monster products in the past and I’ve always been happy with them so of course I assumed this would be great. Unfortunately, I tried the earpieces and the sound was so low even at the highest volumes that it was just too difficult to hear. Now you might say that because they are on the ear and not directly in the canal, that would be the reasoning, but actually I have a couple of pairs that have excellent sound quality, and they are the same type of “on the ear” product. The other thing that actually happened with this was one of the two of them also didn’t charge so whatever initial charge it came with must’ve been what it was utilizing originally, because then, when I tried to plug them into charge them again completely, one of them was charging, but the other one wasn’t and it never turned on again. I did see looking back on this that it says it’s a frequently returned product, and I guess I had skipped past that as I was scrolling down to look at reviews. Some of the reviews are great so I assumed I would have no problem. So I guess you would have to try it for yourself and see if you end up with a pair that works well. My guess is some of them do and some of them don’t from what I can tell from some of the other reviews. If you do try them, I hope they work for you!
R**E
Decent product
Sound was great but battery died in about 4 hours.
W**M
Perfect for kids!
The Monster open ear headphones are far better than expected. I bought these for my 7 year old daughter as a christmas gift and she loves them. I was worried that they would be too large for her ears but they fit great and are surprisingly comfortable. They stay on her ears and have never fallen off accidentally. My wife and I like that they do not insert into her ear because she shares them with her sister. When they watch the tablet together, they each just use one of the earbuds. We also like that she can still hear us talking when she has them on unlike the earbuds that insert into the ear. We previously tried a pair of earbuds that inserted into her ears and they would fall out easily. If you are looking for a pair of kid friendly headphones, don't even hesitate. These are perfect!
B**K
What is positive on looks and feel lacks in productivity which is what is most important.
Was looking for, and still am, for that matter, a pair of over the ear - ear buds, because my in ear air pods have been giving me some ear problems. So I saw these and thought it would be a good option. Immediately opened the box and tried them out when I got them and at first the fit was uncomfortable, but then it didn't bother me as much. Problem was I couldn't hear anything when at max levels of volume plus my clients couldn't hear me when I was talking. Both not ideal for work environment. So the quality wasn't what I was expecting. Also it was hard to gauge the battery levels and couldn't tell how much time I had left to use them. Plus when it got low there was a constant ringing/beeping which seemed to go on and one and as I said wasn't sure how much time was left with battery or even how much juice the case had. Was so looking forward to making these my ear buds of choice. Better luck next time.
S**Y
Very comfortable
I have had these several months. They are very comfortable I often forget I have them on. The sound is good, not as good as my Samsung buds for music but I still like these a lot. They hold a charge a long time also.
Trustpilot
1 month ago
2 weeks ago