Tronsmart Mirtune S100 Review: 50W Speaker for $48.10? (Honest)
A 50W portable Bluetooth speaker for under $50 sounds too good to be true. So I checked the numbers. The Tronsmart Mirtune S100 sells for $48.10 on AliExpress, and it carries a 4.9-star rating across 4,603 sold. That is an unusually strong record for a budget speaker. In this review, I look at the sound, the battery, the waterproofing, and the real catches. Then I answer the only question that matters: is it worth your $48.10?
The short version: The Mirtune S100 is a genuine bargain. It plays loud, it lasts all day, and it survives rain and pool splashes. The 30W subwoofer gives it real bass that most budget speakers lack. However, it is heavy at 1.4 kg, and it takes 4.5 hours to recharge. The 20-hour battery claim also needs 50% volume with the lights off. If you want big sound for under $50, this is one of the best options I have found. If you want a light speaker for your pocket, look elsewhere.
Best for: backyard parties, camping trips, beach days, and anyone who wants loud 50W sound without paying JBL prices.
The Tronsmart Mirtune S100 is a 50W portable Bluetooth speaker with a 30W subwoofer, dual 10W tweeters, IPX7 waterproofing, and a built-in powerbank. It plays for up to 20 hours, pairs over Bluetooth 5.3, and carries a retractable handle for outdoor use.
Tronsmart launched the S100 as its first 50W portable speaker with a retractable handle. The design is simple. It is a tube-shaped speaker with a rubber handle on top, LED light strips on the sides, and control buttons on the front. It comes in black or blue.
Inside the box, you get the speaker and a USB-C charging cable. There is no wall charger in the box. You charge it with any standard USB charger or powerbank.
The speaker works in four modes. You can stream over Bluetooth, plug in an aux cable, play from a USB stick, or play from a microSD card. It also has a built-in microphone, so you can take calls through it.
Who Created the Tronsmart Mirtune S100?
Tronsmart is a Shenzhen-based audio brand founded in 2013. Its parent company is Shenzhen Geekbuy E-Commerce Co., Ltd. The brand now sells in more than 90 countries. It holds over 40 patents, including its SoundPulse® bass technology. It also owns trademarks in 51 countries.
That track record matters. Tronsmart is not a no-name store that appeared last month. It has spent over a decade building budget speakers, earbuds, and party speakers. The Mirtune line is its outdoor speaker family, and the S100 is the 50W model in that line.
The AliExpress listing for this review comes from the Taihe Store on AliExpress. It shows 4,603 sold with a 4.9-star rating. That sales volume is a good sign. A store does not reach 4,600 sales on one speaker by accident.
Tronsmart Mirtune S100 Features — In Detail
50W Sound with a Real Subwoofer
The headline feature is the 50W output. A 30W racetrack subwoofer handles the bass. Two 10W tweeters handle the mids and highs. Together, they form a 2.1-channel setup. That is rare under $50.
Most budget speakers in this price range use a single full-range driver. They sound thin at high volume. The S100 sounds fuller because the subwoofer does the low-end work. Independent reviewers agree. Audiophile Heaven calls the sound “powerful” with “good sonic quality” and high maximum loudness.
The SoundPulse button adds a bass boost. It makes the sound more dynamic and V-shaped. That suits pop, hip-hop, and party music. It does not suit listeners who want a flat, neutral sound.
IPX7 Waterproof Rating
The S100 carries an IPX7 waterproof rating. That means it survives rain, splashes, and brief immersion in water. You can use it by the pool or at the beach without worry.
However, IPX7 is a water rating only. It is not a dust rating. Sand can still get into the ports. Also, you should rinse the speaker after saltwater or chlorine use. That keeps the seals in good shape.
20 Hours of Playtime and a Built-In Powerbank
The battery is 8000mAh. Tronsmart rates playtime at up to 20 hours. That figure applies at 50% volume with the LED lights off. In real use, it will be less.
Audiophile Heaven tested it at 70% volume for 8 hours. About 50% of the battery remained. That suggests roughly 14 to 16 hours at high volume. That is still a full day of music.
The built-in powerbank is a useful extra. You can plug your phone into the USB port and charge it from the speaker. That is handy on camping trips when outlets are far away.
The weak point is charging. A full recharge takes about 4.5 hours. That is slow. You should charge it overnight before a trip.
Bluetooth 5.3, TWS, and the Retractable Handle
Bluetooth 5.3 gives a stable connection with a range of up to 18 meters in open areas. Pairing is quick and simple.
TWS stereo pairing lets you connect two S100 speakers. They then play as a left-right stereo pair. That is a nice option for larger rooms or outdoor parties.
The retractable rubber handle is the signature design feature. It folds flat when you do not need it. It pops up when you want to carry the speaker. Tronsmart calls the S100 the first 50W portable speaker with this handle design.
The Tronsmart app adds custom EQ settings. You can tune the sound to your taste. The app is optional. The speaker works fine without it.
Tronsmart Mirtune S100 Pricing Explained
The AliExpress listing price is $48.10. The card lists an original price of $137.36. The official Tronsmart price is around $79. So the AliExpress price undercuts the official price by about 40%.
There is one warning. A second AliExpress listing sells the same S100 for $65.59. That listing has only 18 sold. This review covers the $48.10 listing with 4,603 sold. Make sure you buy from the right listing.
There is no subscription. There is no app purchase. The price you pay is the full cost. You may want a USB-C wall charger if you do not own one already. Most people already have one at home.
Full-Cost Summary
Tronsmart Mirtune S100 speaker: $48.10.
USB-C charging cable: included.
Wall charger: not included — use one you own, or add about $5 to $10 if you need one.
Real 50W output with a 30W subwoofer — loud enough for outdoor use.
IPX7 waterproof — safe by the pool, at the beach, or in the rain.
Up to 20 hours of playtime at moderate volume.
Built-in powerbank charges your phone on the go.
Retractable handle, Bluetooth 5.3, and TWS stereo pairing.
Under $50 with a 4.9-star rating across 4,603 sold.
The Cons
4.5-hour charge time is slow.
1.4 kg is heavy for a truly pocketable speaker.
20-hour playtime needs 50% volume with the LED lights off.
LED light show drains the battery fast.
SoundPulse sound is V-shaped, not neutral.
No Wi-Fi, multi-room audio, or voice assistant.
Who Should Buy the Tronsmart Mirtune S100?
Best For
Backyard parties and barbecues where you need loud, room-filling sound.
Camping and beach trips where waterproofing and long battery life matter.
Budget buyers who want 50W sound without paying $100 or more.
Anyone who wants a speaker that can also charge a phone.
Not For
Commuters who want a light speaker in a jacket pocket.
Audiophiles who want a flat, neutral sound signature.
People who need Wi-Fi streaming or a voice assistant.
Anyone who cannot wait 4.5 hours for a full charge.
Tronsmart Mirtune S100 vs Alternatives
vs JBL Flip 7
The JBL Flip 7 costs about $129.95. That is nearly three times the S100 price. It is lighter, smaller, and more pocket-friendly. It also carries the JBL brand and polish. However, the S100 gives you more watts per dollar and a bigger battery. If budget matters most, the S100 wins. If size and brand matter most, the Flip 7 wins.
vs Tribit StormBox Micro 2
The Tribit StormBox Micro 2 is a small clip-on speaker in a similar budget range. It clips to a bag or bike. It is far smaller and lighter than the S100. But it cannot match the S100 for volume or bass. The S100 is the better pick for parties. The Tribit is the better pick for hiking or cycling.
vs Tronsmart Mirtune C3 Plus
The Mirtune C3 Plus is a newer Tronsmart sibling. It also offers 50W, and it adds Bluetooth 6.0 and Auracast. It sells for about $37.59 on AliExpress. That is cheaper than the S100. However, it has only 53 sold so far. The S100 has 4,603 sold and a proven track record. If you want the newest tech, the C3 Plus is worth a look. If you want the proven pick, the S100 is the safer buy.
My Exclusive Tronsmart Mirtune S100 Bonus
When you pick up the Tronsmart Mirtune S100 through my link, I am adding one original bonus I created specifically to complement this speaker — not a recycled freebie:
Bonus 1: Portable Speaker Setup & Outdoor Sound Guide — pairing steps, outdoor placement tips, EQ and SoundPulse settings, battery care, and pool and beach protection. It helps you get the best sound from day one.
Click the download button above to get the bonus instantly — no forms, no waiting.
Frequently Asked Questions
Is the Tronsmart Mirtune S100 a scam or legit?
It is legit. Tronsmart is a real brand founded in 2013, with products in more than 90 countries and over 40 patents. The S100 has independent reviews from Audiophile Heaven, ThePhonograph, and StereoGuide. On AliExpress, this listing shows 4.9 stars across 4,603 sold. Just make sure you buy the $48.10 listing with 4,603 sold, not the $65.59 listing with 18 sold.
How long does the battery last?
Tronsmart rates it at up to 20 hours at 50% volume with the LED lights off. At 70% volume, independent testing found about 50% battery left after 8 hours. That means roughly 14 to 16 hours at high volume. Turn the lights off for the longest playtime.
Is the Mirtune S100 really waterproof?
Yes, it is IPX7 rated. It survives rain, splashes, and brief immersion in water. It is safe by the pool and at the beach. Rinse it after saltwater or chlorine use. Note that IPX7 covers water only, not dust or sand.
Can it charge my phone?
Yes. The built-in powerbank lets you plug your phone into the USB port and charge it from the speaker battery. That is useful on trips, but it will reduce the speaker playtime.
Does it work with two speakers in stereo?
Yes. TWS stereo pairing connects two S100 speakers as a left-right pair. You need two units for this feature.
How long does it take to charge?
About 4.5 hours from empty, using a USB-C charger. That is slow. Charge it overnight before a trip.
Final Verdict: Is the Tronsmart Mirtune S100 Worth It?
Yes, for most buyers. The Mirtune S100 gives you 50W of real sound, IPX7 waterproofing, and all-day battery for $48.10. The 4.9-star rating across 4,603 sold backs that up. No other speaker I found under $50 offers this much power with this much proof behind it.
Rating: 4.9/5
Buy it if: you want loud outdoor sound, long battery life, and waterproofing for under $50.
Skip it if: you need a light pocket speaker, a neutral sound signature, or Wi-Fi and voice control.
✍️ My Personal Verdict
I went into this review expecting a typical budget speaker with a big wattage number and thin sound. The evidence changed my mind. Independent reviewers confirm the loudness and the battery life, and 4,603 buyers gave it 4.9 stars. The 1.4 kg weight and the slow 4.5-hour charge are real drawbacks, and I would not carry this one in a jacket pocket. But for a backyard, a campsite, or a beach day, it is hard to beat at $48.10. If I needed a loud outdoor speaker on a tight budget, this is the one I would buy.
This review contains affiliate links. If you buy through my links, I may earn a commission at no extra cost to you. That commission supports this site and lets me keep testing products honestly. My verdicts are based on research and independent reviews, not on the commission I might earn.
