Short answer: the Ultimate Ears Wonderboom 4, though neither ranks well in its class. It ranks #108 of 177 medium speakers by sound quality, rated 2.9/5, at $64.99. The Walla Sound ranks #163, rated 2.2/5, at $49.99, $15 cheaper, which does not close the gap in sound quality. Both are rated below 3.0/5 among the 177 medium speakers; for better sound, the EarFun Uboom L ranks #2 at $49.79.
The Ultimate Ears Wonderboom 4 is the better-sounding, longer-running pick. A small, tough waterproof speaker with a strap loop and USB-C charging, easy to clip on a bag for outdoor trips. It is rated for 14 hours of battery against 8 for the Walla Sound. It is rated IP67 against IPX5 for the Walla Sound. It charges over USB-C rather than Micro USB. The tradeoff: Bass isn’t as deep as the top-ranked speakers and is a little thuddy.
The Walla Sound is the lighter pick. A small shockproof speaker with an aux input, microSD playback and a built in microphone. At 0.7 lbs (300 g) it weighs noticeably less than the Ultimate Ears Wonderboom 4 at 0.9 lbs (420 g). It keeps a wired aux input, which the Ultimate Ears Wonderboom 4 lacks. Watch for: No bass, gets distorted when turned up.
Buy the Ultimate Ears Wonderboom 4. It is rated higher for sound quality, and the $15 saving on the Walla Sound is not enough to make up the difference.
Want more options? Browse the full Portable Bluetooth rankings.
A small, tough waterproof speaker with a strap loop and USB-C charging, easy to clip on a bag for outdoor trips.
A small shockproof speaker with an aux input, microSD playback and a built in microphone.
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Specifications Side By Side
| Ultimate Ears Wonderboom 4 | Walla Sound | |
|---|---|---|
| Price | $64.99 | $49.99 |
| Ranked | #108 of 177 in Medium Size Portable Bluetooth Speakers | #163 of 177 in Medium Size Portable Bluetooth Speakers |
| Battery Life | 14 hours (Manufacturer specified) | 8 hours (Manufacturer specified) |
| Maximum SPL | 87dB (Manufacturer specified) | - |
| Power Input | USB-C | Micro USB |
| Stereo | No | No |
| Omnidirectional | Yes | No |
| Weight | 0.9 lbs (420 g) | 0.7 lbs (300 g) |
| IP Rating | IP67 | IPX5 |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.2 | 5.0 |
| Dimensions | 4.1” x 3.8” (104 x 95.3 mm) | 2.7” x 2.7” x 6.3” (68 x 68 x 160 mm) |
| Drivers | 2x 40mm active drivers + 2x passive radiators (46.1 x 65.2mm) | 30mm metal diaphragm driver |
| TWS | Yes | Yes |
| Party Mode | No | - |
| App | No | No |
| EQ | No | No |
| Built-in Microphone | No | Yes |
| Power Bank | No | - |
| Aux Input | No | Yes |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| Strap | Yes (built-in loop) | - |
| Amplifier Power | - | 10W (2 x 5W) |
| Bass Extension (-10dB) | - | ~90Hz |
| MicroSD Playback | - | Yes |
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