Short answer: the Soundcore Motion 300. It ranks #3 of 182 medium speakers by sound quality, rated 4.5/5, at $79.99. The Tronsmart Mirtune C3 ranks #102, rated 3.1/5, at $29.99, $50 cheaper, not enough of a saving to outweigh the sound-quality gap.
The Soundcore Motion 300 is the better-sounding pick. A compact stereo speaker with deep bass for its size, hi res Bluetooth and a custom EQ for each position, standing or lying down. It supports LDAC Bluetooth, which the Tronsmart Mirtune C3 lacks. It plays in stereo from a single unit, unlike the Tronsmart Mirtune C3. Watch for: Without the above EQ or turning the top 2 treble EQ bars to max, this speaker is very rolled off in the treble and will rank around #50 in the rankings.
The Tronsmart Mirtune C3 is the lighter choice. A small, light waterproof speaker at a budget price, with Auracast multi speaker sync, stereo pairing, USB-C audio input and app EQ. At 1.2 lbs (530 g) it weighs noticeably less than the Soundcore Motion 300 at 1.7 lbs (772 g). 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 Soundcore Motion 300. It is rated higher for sound quality, and the $50 saving on the Tronsmart Mirtune C3 is not enough to make up the difference.
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
| Soundcore Motion 300 | Tronsmart Mirtune C3 | |
|---|---|---|
| Price | $79.99 | $29.99 |
| Ranked | #3 of 182 in Medium Size Portable Bluetooth Speakers | #102 of 182 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes (Tronsmart) |
| Aux Input | No | No |
| Bass Extension (-10dB) | 50Hz | - |
| Battery Life | 13 hours (Manufacturer specified) | 12 hours at 50% volume (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | AAC, LDAC, SBC | SBC |
| Built-in Microphone | Yes | - |
| EQ | Yes (9 band with adjustable frequency) | Yes (app) |
| IP Rating | IPX7 | IPX7 |
| Bluetooth Latency | 216ms ldac, 200ms aac, 116ms sbc | - |
| Maximum SPL | 101dB (measured by Alan Ross Reviews) | - |
| Power Bank | No | - |
| Stereo | Yes | No |
| Omnidirectional | Pointing up | No |
| TWS | Yes | Yes |
| Weight | 1.7 lbs (772 g) | 1.2 lbs (0.53 kg) |
| Bluetooth Version | 5.3 | 6.0 |
| Dimensions | 7.9” x 3.6” x 2” (200 x 92 x 50 mm) | 7.1”H x 2.8”W x 2.8”D (180 x 70 x 72 mm) |
| Drivers | 2x 50.8mm (2”) full-range drivers + 2x passive radiators | 1x racetrack woofer + 1x tweeter |
| Frequency Response | 65Hz - 40kHz (Manufacturer specified) | 55Hz - 20kHz (Manufacturer specified) |
| Power Input | USB-C | USB-C |
| Amplifier Power | 30W | 30W |
| Party Mode | Yes (PartyCast up to 100 speakers) | Yes (Auracast) |
| Digital Aux Input | No | Yes (USB-C) |
| Battery Capacity | - | 14.8Wh (7.4V, 2000mAh) |
| Charging Time | - | 2 hours |
| Strap | - | Yes (lanyard) |
Where the Ratings Come From
- Soundcore Motion 300: reviews by Joy & Oluv’Sone, Oluv and Alan Ross.
- 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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