Short answer: the Bose Soundlink Flex. It ranks #38 of 182 medium speakers by sound quality, rated 3.8/5, at $79.99. The DOSS Soundbox Pro ranks #174, rated 2.1/5, at $29.99, $50 cheaper, not enough of a saving to outweigh the sound-quality gap.
The Bose Soundlink Flex is the better-sounding pick. A small, rugged waterproof speaker that survives drops and floats, with a warm, bass forward sound for casual outdoor use. It charges over USB-C rather than Micro USB. The tradeoff: Warm sounding with overly boosted bass which drowns out midrange detail.
The DOSS Soundbox Pro is the longer-running pick. An inexpensive water resistant stereo speaker with an extra bass button, LED lights, a long rated battery and an aux input. It is rated for 20 hours of battery against 12 for the Bose Soundlink Flex. It keeps a wired aux input, which the Bose Soundlink Flex lacks. It has an adjustable EQ, which the Bose Soundlink Flex lacks. Watch for: Barely any bass.
Buy the Bose Soundlink Flex. It is rated higher for sound quality, and the $50 saving on the DOSS Soundbox Pro 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
| Bose Soundlink Flex | DOSS Soundbox Pro | |
|---|---|---|
| Price | $79.99 | $29.99 |
| Ranked | #38 of 182 in Medium Size Portable Bluetooth Speakers | #174 of 182 in Medium Size Portable Bluetooth Speakers |
| App | Yes | No |
| Bass Extension (-10dB) | 56Hz | - |
| Battery Life | 12 hours (Manufacturer specified) | 20 hours (Manufacturer specified) |
| Built-in Microphone | Yes | Yes |
| EQ | No | Yes (extra bass button) |
| IP Rating | IP67 | IPX6 |
| Bluetooth Latency | 33ms | - |
| Maximum SPL | 96dB (measured by Alan Ross Reviews) | - |
| Party Mode | Yes (Bose Party mode) | - |
| Power Input | USB-C | Micro USB |
| Stereo | No | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 1.3 lbs (589 g) | 1.2 lbs (558 g) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 4.2 | 5.0 |
| Dimensions | 7.9” x 3.5” x 2” (201 x 90 x 52 mm) | 7.8” x 3” x 3” (197 x 75 x 75 mm) |
| Drivers | 1x 60mm full-range driver + 2x passive radiators | 52mm dual woofers + passive radiators |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| Aux Input | No | Yes |
| Strap | Yes (built-in loop) | - |
| MicroSD Playback | - | Yes |
| Amplifier Power | - | 20W |
| Lights | - | Yes |
Where the Ratings Come From
- Bose Soundlink Flex: reviews by Joy & Oluv’Sone, Oluv and Alan Ross.
- DOSS Soundbox Pro: manufacturer specifications and listening comparisons; no independent measurement has been published yet.
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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