






🎶 Unleash the Monster: Sound that moves with you, anywhere, anytime!
The Monster Bluetooth speaker delivers 40 watts of powerful, distortion-free sound through multiple connectivity options including Bluetooth, AUX, TF card, USB, and FM radio. Its compact, portable design features a removable silicone strap and adjustable shoulder strap for ultimate convenience. With up to 12 hours of continuous playback powered by a high-capacity lithium-ion battery and advanced Bluetooth technology for seamless pairing, Monster is engineered for professionals who demand premium audio on the go.









| ASIN | B0D12LB864 |
| Audio Input | Bluetooth, AUX, TF card, FM radio |
| Best Sellers Rank | #1,613 in Portable Bluetooth Speakers #10,506 in MP3 & MP4 Player Accessories |
| Brand | Monster |
| Color | Dark Black |
| Compatible Devices | Smartphone |
| Connector Type | Aux |
| Customer Reviews | 4.2 out of 5 stars 628 Reviews |
| Item Dimensions | 4.92 x 3.84 x 9.61 inches |
| Item Weight | 1.36 Kilograms |
| Item dimensions L x W x H | 4.92 x 3.84 x 9.61 inches |
| Manufacturer | Monster |
| Model Number | MS22139 |
| Number of Channels | 1 |
| Output Wattage | 40 Watts |
| Power Source | Battery Powered |
| Unit Count | 1.0 Count |
T**E
Monster Bargain
Surprisingly good speaker at the current discount price. Plenty of power and sounds better than one would expect at this price. The only downside is it doesn't support TWS but has multiple ways to connect to other devices including FM.
B**.
Amazing!!!!
The good: This is actually one of the best rechargeable Bluetooth speakers Ive ever heard. Even though it has a small speaker, it has phenomenal sound quality and is loud!! But still clear as a bell. I can't say enough great things about the sound quality. The battery life is amazing so far. Ive charged it once and have played it for several hours a day for 3 days so far. The battery meter hasn't moved. "The mic input" I plugged in a multi mic interface using my guitar and a mic. I played and sang through it to get an idea of what sound quality id get out of it. Wow! This speaker will rival any battery powered speaker of its class. And possibly rival any 120v standard plug in guitar amp of comparable size. Im very impressed with the MFS 1. "The not so good" My only complaint is, when using a thumb drive (usb) you cant directly go to an individual file or chapter. It plays from track 1 of the first chapter, and then plays every song after. Now, if you've specifically set up a thumb drive with that in mind. No problem! But if you've got thousands of songs from every genre, it could be a party foul to go from Busta Rhymes to Barry Manilo! 😂🤣 But on a serious note. If compact size with outstanding performance is what you're looking for. You will not be disappointed. (Note to Monster) Please put reverb on these speakers in the future. That would set this speaker way ahead of most on the market.
F**S
My favorite speaker i got so far
Sounds great for my music type and i can tell its not durable if hit hard based on how plasticy it is but for the price range i found my favorite speaker the buttons and dials are great i love that stuff the shoulder strap is my favorite thing its light to easy to use and the bluetooth works good the card slot works good the fm radio works good is all all around a very solid product for the price i crank it up loud in my work place it gets loud as for outdoor use id be very wary of rain i dont know how water or snow would effect it but for nice spring summer or clear days its good and the battery life to me felt like 4 to 5 hours on a single charge Overall very good for the price
K**R
Worth $40, not $159
Its worth $40 but not a penny more. I'm a fan of most monster products but their suggested $159 retail is insane. Ill give it 5 stars at $40 but if I would have paid $159 id give it one star plus I would be returning it. Otherwise seems well constructed., lacks bass but thats to be expected for the small 3.5" full range driver thats enclosed.
F**E
Outstanding - A MUST HAVE.
I mostly write reviews when I am impressed with the quality of the good and yes, I am overly surprised with this small portable speaker. I got it 5 minutes ago and turned it on and the sound is unbelievable. The bass is perfect for me, the sound can be extremely loud with no distortion of any kind. The BT connection is excellent - I carried it in another room and no interference or disruption of any kind, unlike another very famous brand. I tried several brands and at my amazement, this one fulfill my expectations at 500%. It is the ONE I should have purchased in first place. The rubber handle and the shoulder strap are very convenient. The speaker is not too heavy nor too light. I really love it and right out of the box. I just discover that Monster is not only excellent for their various cables but also in speakers! I really highly recommend it and the price is unbeatable! Thank you Monster for providing such quality products.
G**N
Carabiners prone to breaking.
I love the speaker it’s loud and legit. My only issue is the strap is super cheap. Both of the carabiners broker within one month of having it…. I wish there were replacement ones but they are sown in… smh
B**D
Lacks Bass. Poor Sound Quality. Loud.
I got this at a discounted price for Black Friday. $39.99. If that was the full price, it'd be just right. Yep. $40 in sound is about all you get. It's loud, that's for sure. But that's about it. It took awhile to get it connected, but once it does, it will automatically auto-connect when turned on. The silicone handle is nice. It comes with a USB-C cable and a shoulder strap. Monster is not the Monster that once was, unfortunately. Battery life seems on-par with the description, and the unit seems durable. I guess this would be great for jobsites and for the beach. Would be a perfect companion for golf and sports, as well. If you like flat sound with little bass, this is for you. Otherwise, look elsewhere. Ive had smaller generic BT speakers with MUCH better sound. Take it for what it's worth.
M**D
I Really like this MONSTER Speaker I just bought! It's Not for Everyone......
I Really like this MONSTER Speaker I just bought! First off it is a Very Loud Speaker, which i have been searching for Such a Long time! So Finally found! I like it in every way, Well Built, Sizable, the sound quality is exactly on the Mark for Myself! I am Not a Big Bass Fan! if you are and you purchase this Model, you will be Very Disappointed! This is Not a model that will even get you half way close to your Bass Needs! it just isn't. That is Not to say anything Negative about this Model! I am tone deaf and this is where this Speaker fits in Perfectly for Me! We all like different aspects of sound! MONSTER has blown me away! Great Price Quality Product!
Trustpilot
2 months ago
3 weeks ago