Short answer: the Bogasing M5. It ranks #61 of 177 medium speakers by sound quality, rated 3.5/5, at $52.99; the Ultimate Ears Wonderboom 2 ranks #110, rated 2.9/5, and costs $80, so there is not much of a tradeoff to weigh.
The Ultimate Ears Wonderboom 2 is the lighter option. A small waterproof speaker that floats and is light enough to toss in a bag for the pool or beach. At 0.9 lbs (420 g) it weighs much less than the Bogasing M5 at 1.7 lbs (757 g). The tradeoff: Not stereo, barely any bass, recessed treble.
The Bogasing M5 is the better-sounding, deeper-bass choice. A compact, backpack friendly speaker with very long battery life and USB-C charging at a budget price. Its bass reaches about 61Hz before falling 10dB, against 82Hz for the Ultimate Ears Wonderboom 2. Alan Ross Reviews measured it at 96dB at full volume, against 88dB for the Ultimate Ears Wonderboom 2. It is rated for 30 hours of battery against 12 for the Ultimate Ears Wonderboom 2. The catch: Front/rear driver configuration.
Buy the Bogasing M5. It is rated higher for sound quality than the Ultimate Ears Wonderboom 2 and costs less, which makes it the one to get unless you need something the other one does better.
Looking for alternatives? See the complete Portable Bluetooth rankings.
A small waterproof speaker that floats and is light enough to toss in a bag for the pool or beach.
A compact, backpack friendly speaker with very long battery life and USB-C charging at a budget price.
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Specifications Side By Side
| Ultimate Ears Wonderboom 2 | Bogasing M5 | |
|---|---|---|
| Price | $80 | $52.99 |
| Ranked | #110 of 177 in Medium Size Portable Bluetooth Speakers | #61 of 177 in Medium Size Portable Bluetooth Speakers |
| Bass Extension (-10dB) | 82Hz | 61Hz |
| Battery Life | 12 hours (Manufacturer specified) | 30 hours (Manufacturer specified) |
| Maximum SPL | 88dB (measured by Alan Ross Reviews) | 96dB (measured by Alan Ross Reviews) |
| Power Input | Micro USB | USB-C |
| Stereo | No | No (front/rear drivers) |
| Omnidirectional | Yes | Yes |
| Weight | 0.9 lbs (420 g) | 1.7 lbs (757 g) |
| IP Rating | IP67 | IPX7 |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.1 | 5.3 |
| Dimensions | 4.1” x 3.8” (104 x 95.3 mm) | 6.3” x 3” x 2.8” (160 x 76 x 71 mm) |
| Drivers | 2x 40mm active drivers + 2x passive radiators | 30W system |
| TWS | Yes | Yes |
| Party Mode | No | - |
| App | No | No |
| EQ | No | Yes |
| Built-in Microphone | No | - |
| 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 |
| Power Bank | - | Yes (USB-A) |
| USB Playback | - | Yes |
| Frequency Response | - | 50Hz - 20kHz (Manufacturer specified) |
| Amplifier Power | - | 40W |
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