Short answer: the Xiaomi Sound Outdoor. It ranks #46 of 177 medium speakers by sound quality, rated 3.7/5, at $49.99; the W-King D320 ranks #49, rated 3.6/5, and costs $52.92, so there is little reason to consider the other one.
The Xiaomi Sound Outdoor is the lighter pick. An affordable waterproof outdoor speaker with a separate tweeter, decent battery life and linking to many more speakers. At 1.3 lbs (597 g) it weighs much less than the W-King D320 at 3.1 lbs (1.4 kg). 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.
The W-King D320 is the longer-running pick. An affordable waterproof travel speaker with loud, punchy bass, long battery life, an aux input, microSD playback and app EQ. It is rated for 24 hours of battery against 12 for the Xiaomi Sound Outdoor. It keeps a wired aux input, which the Xiaomi Sound Outdoor lacks. It has an adjustable EQ, which the Xiaomi Sound Outdoor lacks. The tradeoff: A single D320 is not stereo, and its warm balance trades away some detail and upper-treble air.
Buy the Xiaomi Sound Outdoor. It is rated higher for sound quality than the W-King D320 and costs less, so only choose the other one for a particular feature it does better.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
An affordable waterproof outdoor speaker with a separate tweeter, decent battery life and linking to many more speakers.
An affordable waterproof travel speaker with loud, punchy bass, long battery life, an aux input, microSD playback and app EQ.
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Specifications Side By Side
| Xiaomi Sound Outdoor | W-King D320 | |
|---|---|---|
| Price | $49.99 | $52.92 |
| Ranked | #46 of 177 in Medium Size Portable Bluetooth Speakers | #49 of 177 in Medium Size Portable Bluetooth Speakers |
| App | No | Yes |
| Battery Life | 12 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Built-in Microphone | Yes | Yes |
| EQ | No | Yes |
| IP Rating | IP67 | IP67 |
| Party Mode | Yes (Speakersync, up to 100 speakers) | - |
| Power Input | USB-C | USB-C |
| Stereo | No | No |
| Omnidirectional | No | No |
| TWS | Yes | No |
| Weight | 1.3 lbs (597 g) | 3.1 lbs (1.4 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.4 | 5.3 |
| Dimensions | 7.7” x 2.7” x 2.6” (196.6 x 68 x 66 mm) | 3.3” x 8.4” (83 x 214 mm) (diameter x height) |
| Drivers | 20W woofer, 10W tweeter + 2x passive radiators | 52mm x 91mm woofer, 2x 25mm tweeters + 2x passive radiators |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) | 100Hz - 18kHz (Manufacturer specified) |
| Amplifier Power | 30W | 40W |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) | SBC (inferred; additional codecs unverified) |
| Aux Input | No | Yes |
| MicroSD Playback | - | Yes |
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