Short answer: the Boat Stone 350, though neither ranks well in its class. It ranks #149 of 172 medium speakers by sound quality, rated 2.3/5, at $18; the DOSS Soundbox Pro ranks #165, rated 2.1/5, and costs $29.99, which makes this an easy call rather than a real tradeoff. Both are rated below 3.0/5 among the 172 medium speakers, so if sound quality matters, consider the Miatone Boompro instead, ranked #16 at $35.99.
The Boat Stone 350 is the lighter pick. 10W cylindrical stereo speaker with dual passive radiators, IPX7 water resistance, microSD card slot, and 3.5mm aux input. At 0.9 lbs (426 g) it weighs noticeably less than the DOSS Soundbox Pro at 1.2 lbs (558 g). It charges over USB-C rather than Micro USB. Watch for: Midrange peaks with rolled-off treble.
The DOSS Soundbox Pro is the longer-running pick. A 1.2 lbs (558 g) stereo speaker with IPX6 water resistance, a rated 20-hour battery and 20W of output from dual 52mm woofers. It is rated for 20 hours of battery against 6 for the Boat Stone 350. The catch: Barely any bass.
Buy the Boat Stone 350. It is rated higher for sound quality than the DOSS Soundbox Pro and costs less, so only choose the other one for a particular feature it does better.
Looking for alternatives? See the complete Portable Bluetooth rankings.
10W cylindrical stereo speaker with dual passive radiators, IPX7 water resistance, microSD card slot, and 3.5mm aux input.
eBay
A 558 g stereo speaker with IPX6 water resistance, a rated 20-hour battery and 20W of output from dual 52mm woofers.
Amazon $29.99 eBayPrices on this page were last checked October 16, 2026 at 5:46 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
| Boat Stone 350 | DOSS Soundbox Pro | |
|---|---|---|
| Price | $18 | $29.99 |
| Ranked | #149 of 172 in Medium Size Portable Bluetooth Speakers | #165 of 172 in Medium Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 87Hz | - |
| Battery Life | 6 hours (Manufacturer specified) | 20 hours (Manufacturer specified) |
| IP Rating | IPX7 | IPX6 |
| MicroSD Playback | Yes | Yes |
| Power Input | USB-C | Micro USB |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 0.9 lbs (426 g) | 1.2 lbs (558 g) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.0 | 5.0 |
| Dimensions | 3.5” x 7.1” (90 x 180 mm) | 7.8” x 3” x 3” (197 x 75 x 75 mm) |
| Built-in Microphone | Yes | Yes |
| Amplifier Power | 10W | 20W |
| Drivers | 2x 20mm tweeters + 2x 45mm drivers | 52mm dual woofers + passive radiators |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) | SBC (inferred; additional codecs unverified) |
| App | No | No |
| EQ | Yes (multiple modes) | Yes (extra bass button) |
| Strap | No | - |
| Lights | - | Yes |
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