Short answer: the Xiaomi Sound Outdoor. It ranks #46 of 182 medium speakers by sound quality, rated 3.7/5, at $49.99. The Tronsmart Mirtune C3 ranks #102, rated 3.1/5, at $29.99, $20 cheaper, which does not close the gap in sound quality.
The Xiaomi Sound Outdoor is the better-sounding choice. An affordable waterproof outdoor speaker with a separate tweeter, decent battery life and linking to many more speakers. The tradeoff: Bass reach is limited for the cabinet size, with a rated lower limit of 60Hz, and the boosted bass gets somewhat uncontrolled at high levels.
What the Tronsmart Mirtune C3 does well: A small, light waterproof speaker at a budget price, with Auracast multi speaker sync, stereo pairing, USB-C audio input and app EQ. It has an adjustable EQ, which the Xiaomi Sound Outdoor lacks. The catch: In GiT’s three way blind test it came behind the Creative Muvo Go and Xiaomi Sound Outdoor, sounding good only on sparse tracks, and listeners in AudioPro Reviews’ comparison found the JBL Flip 6 fuller with more bass.
Buy the Xiaomi Sound Outdoor. It is rated higher for sound quality, and the $20 you would save on the Tronsmart Mirtune C3 does not close the gap.
Want more options? Browse the full Portable Bluetooth rankings.
Prices on this page were last checked November 14, 2026 at 6:17 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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Specifications Side By Side
| Xiaomi Sound Outdoor | Tronsmart Mirtune C3 | |
|---|---|---|
| Price | $49.99 | $29.99 |
| Ranked | #46 of 182 in Medium Size Portable Bluetooth Speakers | #102 of 182 in Medium Size Portable Bluetooth Speakers |
| App | No | Yes (Tronsmart) |
| Battery Life | 12 hours (Manufacturer specified) | 12 hours at 50% volume (Manufacturer specified) |
| Built-in Microphone | Yes | - |
| EQ | No | Yes (app) |
| IP Rating | IP67 | IPX7 |
| Party Mode | Yes (Speakersync, up to 100 speakers) | Yes (Auracast) |
| Power Input | USB-C | USB-C |
| Stereo | No | No |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 1.3 lbs (597 g) | 1.2 lbs (0.53 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.4 | 6.0 |
| Dimensions | 7.7” x 2.7” x 2.6” (196.6 x 68 x 66 mm) | 7.1”H x 2.8”W x 2.8”D (180 x 70 x 72 mm) |
| Drivers | 20W woofer, 10W tweeter + 2x passive radiators | 1x racetrack woofer + 1x tweeter |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) | 55Hz - 20kHz (Manufacturer specified) |
| Amplifier Power | 30W | 30W |
| Digital Aux Input | No | Yes (USB-C) |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) | SBC |
| Aux Input | No | No |
| Battery Capacity | - | 14.8Wh (7.4V, 2000mAh) |
| Charging Time | - | 2 hours |
| Strap | - | Yes (lanyard) |
Watch Them Compared
Videos and reviews that test both speakers side by side.
Where the Ratings Come From
- Xiaomi Sound Outdoor: reviews by Oluv, Mateusz Cholewa and Techder Audios.
- Tronsmart Mirtune C3: reviews by THBOX, GiT and AudioPro.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
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