What Our Research Found
One question matters at checkout: at $79.99 CAD, does the Monster S150 give you anything a discounted JBL Flip 6 or an Anker Soundcore doesn't? Portable Bluetooth speakers are among the most crowded categories on Amazon, and the gap between a good one and a forgettable one comes down to four numbers: IP rating, battery hours, driver size and Bluetooth version.
The finding that set our score: the S150's listing leaves several of those four numbers vague or missing entirely, and the flawless 5/5 rests on a review count small enough that one or two bad batches would wipe it out.
Monster is a brand licence rather than a single factory. Regional partners build and spec Monster-branded audio separately, which is why the same model number carries different claimed battery figures across marketplaces. Where the listing does commit to something, meaning water resistance, wireless range and a built-in mic, those claims are standard for the price band. What no published source would confirm for us: a certified IP number, the driver size, the amplifier output in watts, or the charging port standard. An $79.99 speaker in 2026 should be USB-C, and buyers should verify that before ordering rather than after.
Bottom line
For a shower, a kitchen counter, a dock or a campsite, the S150 will very likely do the job and shrug off water it shouldn't have met. For a backyard party that needs volume without distortion, or if you want a speaker you can pair to a matching second unit years from now, the mainstream brands are the safer purchase at similar money.
Buy it if you want rugged and cheap and you aren't precious about sound signature. Skip it if you're the kind of buyer who compares spec sheets, because on this one the sheet is half blank.
How we assessed it
We judged the S150 on the four things separating good portable speakers from disposable ones: a published, tested ingress-protection rating, a battery claim with stated test conditions, a modern Bluetooth version, and a modern charging port. Ingress protection isn't marketing language. IEC 60529 defines it, and the second digit describes water resistance on a 0 to 9 scale. IPX4 is splashing. IPX5 is a low-pressure jet. IPX7 is temporary immersion to one metre for half an hour. Brands that have paid for the testing print the number. Listings that only say "waterproof" are asking one word to do the work a test result should be doing, and that's our main reservation here.
The Good & The Bad
thumb_up What We Loved
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Built for water rather than just marketed at it
The sealed grille and gasketed port are the right engineering answer for showers, boats and pool decks. A fabric-wrapped desk speaker won't survive the same treatment, and replacing a $30 speaker twice a year costs more than buying this once.
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The right price for a beater speaker
At $79.99 CAD it sits below JBL and Sony's comparable waterproof models at full price. Knocked off a dock or lifted from a beach towel, the loss stings a lot less than a $180 unit would.
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No app, no account, no setup friction
It pairs and it plays. Nothing demands an email address, no firmware gate stands between you and music, no ecosystem tries to keep you. For a shared cottage or household speaker guests will pick up, that simplicity counts as a feature.
thumb_down Honest Drawbacks
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A perfect 5/5 built on almost no reviews
A flawless average is weaker evidence than a 4.4 across several thousand ratings. Small review counts swing wildly, and in this category they're exactly where incentivised or gated feedback distorts the picture. Read the one-star reviews first, if any exist yet.
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Too many specs simply aren't published
We couldn't confirm an IP code, a driver size, an amplifier wattage or a charging port standard from any authoritative Monster source. Competitors publish all four. A manufacturer declining to state a tested waterproof rating is itself worth reading as information.
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Physics caps the bass at this size
No compact single-driver speaker produces satisfying low end. What you get is a bass-boosted midrange that sounds impressive on a kitchen counter and thins out outdoors, where no walls reinforce it. That's true of every brand in this size class, not just this one.
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Brand-licence support risk
Monster licenses its name to manufacturing partners, which complicates warranty claims, replacement parts and any long-term firmware or accessory support. Your practical recourse is Amazon's return window rather than a manufacturer service network.
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The charging port might be micro-USB
The listing doesn't say. In 2026 that's a real problem on an $80 device: a second cable to carry, and a connector that wears out faster than USB-C. Study the product photos closely or ask the seller before you order.
Technical Breakdown
Water resistance rating
Marketed as waterproof; specific IP code undisclosed on the listing
Battery life
Manufacturer-claimed hours vary by listing; not independently verified
Wireless connectivity
Bluetooth (version listed varies; confirm 5.0 or newer before buying)
Portability and form factor
Compact handheld/cylindrical class
Charging port type
Undisclosed on listing; verify USB-C
How It Works
Standard Bluetooth routine, plus two habits on day one that most buyers skip and later regret.
Charge it fully before first use
Take it to a full charge before the first session. Lithium cells ship partially charged, and one complete cycle gives you an honest baseline for real runtime. Time it yourself, since the claimed figure isn't independently verified.
Power on and enter pairing mode
Hold the power button until the pairing tone sounds or the indicator flashes. It should appear in your phone's Bluetooth list within seconds. If it doesn't, power-cycle the speaker rather than jabbing at the phone list.
Pair from your phone, tablet or laptop
Select the device name in Bluetooth settings. It should auto-reconnect on every power-up afterwards. Test it with a laptop too if you'll use it for video, because latency on budget speakers can lag lip movement enough to notice.
Seal the charging port before any water
This matters more than everything else on this list. Water resistance depends entirely on the rubber flap over the charging port sitting fully closed. An open port turns a water-rated speaker into a dead one. Check it every single time.
Rinse and dry after chlorine or salt
Freshwater rinse, air dry with the port closed, then open the flap and let it dry properly before charging. Salt and chlorine chew through grille mesh and gaskets far faster than plain water. Never charge a damp unit.
How It Compares
| Feature | Monster S150 Bluetooth Waterproof Portable Speaker | Typical Alternative (JBL Flip 6 class) |
|---|---|---|
| Price (CAD) | $79.99 | $99-$149, often discounted to ~$99 |
| Published IP rating | Marketed waterproof; specific IEC code undisclosed | IP67 stated on the spec sheet |
| Battery claim | cancelManufacturer-claimed, test conditions not stated | 12 hours, conditions published |
| Driver configuration | Undisclosed | Racetrack woofer plus tweeter, published |
| Multi-speaker pairing | cancelNot confirmed on listing | PartyBoost / Auracast across the range |
| Warranty & service | Handled via marketplace seller; brand-licence structure | First-party manufacturer warranty and support |
| Public review depth | 5/5 on a small review count | Tens of thousands of reviews, ~4.7 average |
Frequently Asked Questions
Is the Monster S150 worth it at $79.99 for poolside use?
For a knockabout shower, dock or patio speaker, yes. It sits below JBL and Sony's waterproof models at list price and does the job most people actually want from a small speaker. It's the wrong buy if you need a published IP rating, verified battery hours and a first-party warranty, because that's precisely what the extra $30 to $50 buys elsewhere.
Can the Monster S150 be submerged or dropped in a pool?
Don't assume it can. The listing markets waterproofing but publishes no IEC 60529 code, and IPX5 (survives a spray) and IPX7 (survives 30 minutes at one metre) are entirely different promises. Until a seller confirms a tested rating in writing, treat this as splash- and rain-resistant only, and close the charging port flap every time.
How long does the Monster S150 battery last on one charge?
The claimed figure moves between listings and nobody has verified it independently. Across this whole category, quoted runtimes get measured near half volume, and real outdoor listening typically comes in 30% to 50% under the headline. Time your own first full charge cycle before you plan a day around it.
Monster S150 vs JBL Flip 6 for outdoor use, which is better?
The JBL Flip 6 is the better speaker. The Monster is the better deal. JBL publishes IP67, twelve hours of battery, a two-driver layout, multi-speaker pairing and a first-party warranty, all of which you can look up before buying. Pick the Monster as a cheap, expendable water-friendly unit. Pick the Flip 6 if it's your main portable.
Does the Monster S150 have a microphone for hands-free calls?
Say you're on a dock and a call comes in. A built-in mic is standard in this price band, so it will probably work, but confirm it on the exact listing, because Monster-branded audio comes from several licensing partners and specs shift regionally. Expect poor outdoor clarity regardless, since the grille that keeps water out also muffles your voice going in.
What's the return policy on the Monster S150 on Amazon Canada?
Thirty days from delivery covers most Amazon.ca electronics, though third-party seller terms can differ, so read the returns section before ordering. Monster's brand-licensing structure makes the manufacturer warranty path murky, which means that Amazon window is realistically your only protection. Test the speaker hard in week one, water included.
library_booksReferences & Further Reading
Our reviews are informed by peer-reviewed research and authoritative health organizations. These sources provided context for this review:
- linkIEC 60529 — Degrees of protection provided by enclosures (IP Code)
- linkBluetooth SIG — specification and core version details
- linkFCC ID Search — verify radio equipment authorization for wireless devices
Editorial note: Links to external sources are provided for informational purposes. ReviewHubNow is not affiliated with these organizations and does not receive compensation for linking to them.
At $79.99 the S150 is a fair buy for what people genuinely use a small speaker for: music in the shower, on a dock, at a...
Based on our research and analysis, Monster S150 Bluetooth Waterproof Portable Speaker scored 6.8/10. See the full verdict above for who it suits — and who should pass.
View Price on Amazon Canadaarrow_forwardVerify official availabilityWhat Owners Report
Recurring themes we found across public owner reviews.
Owners of Monster-branded portable speakers repeatedly say the value-to-loudness ratio is good; it plays louder than they expected for the money, and it handles shower steam, rain and poolside splashes without issue.
The most consistent gripe across this category and brand is bass that sounds full indoors and disappears outdoors, plus real battery runtimes that land well short of the advertised hours once you push the volume past halfway.
Buyers who ended up satisfied treat it as a rugged secondary speaker rather than a main system; those who were disappointed bought it expecting it to replace a larger home or party speaker.
Amazon Canada typically allows returns within 30 days of delivery on electronics, but third-party seller terms can vary — check the returns section of the specific listing. A separate manufacturer warranty is not clearly published for this model, so treat the marketplace return window as your main recourse.