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 Megaboom 4 ranks #171, rated 2.1/5, and costs $200, which makes this an easy call rather than a real tradeoff.
Why pick the Ultimate Ears Megaboom 4: A tough waterproof speaker that floats, with USB-C charging, a long battery and PartyUp linking. The catch: A lot of distortion at higher volumes.
The Bogasing M5 is the better-sounding, longer-running choice. A compact, backpack friendly speaker with very long battery life and USB-C charging at a budget price. It is rated for 30 hours of battery against 20 for the Ultimate Ears Megaboom 4. At 1.7 lbs (757 g) it weighs noticeably less than the Ultimate Ears Megaboom 4 at 2.4 lbs (1.1 kg). It keeps a wired aux input, which the Ultimate Ears Megaboom 4 lacks. The catch: Front/rear driver configuration.
Buy the Bogasing M5. It is rated higher for sound quality than the Ultimate Ears Megaboom 4 and costs less, which makes it the one to get unless you need something the other one does better.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
A tough waterproof speaker that floats, with USB-C charging, a long battery and PartyUp linking.
A compact, backpack friendly speaker with very long battery life and USB-C charging at a budget price.
Prices on this page were last checked October 31, 2026 at 7:11 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.
As an eBay Partner, we may be compensated if you make a purchase.
Specifications Side By Side
| Ultimate Ears Megaboom 4 | Bogasing M5 | |
|---|---|---|
| Price | $200 | $52.99 |
| Ranked | #171 of 177 in Medium Size Portable Bluetooth Speakers | #61 of 177 in Medium Size Portable Bluetooth Speakers |
| App | Yes | No |
| Battery Life | 20 hours (Manufacturer specified) | 30 hours (Manufacturer specified) |
| IP Rating | IP67 | IPX7 |
| Party Mode | Yes (PartyUp up to 50 speakers) | - |
| Stereo | No | No (front/rear drivers) |
| Omnidirectional | Yes | Yes |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.1 | 5.3 |
| Dimensions | 3.4” x 3.4” x 8.9” (87 x 87 x 225 mm) | 6.3” x 3” x 2.8” (160 x 76 x 71 mm) |
| Drivers | 2x 50x50mm full-range + 2x 55x86mm passive radiators | 30W system |
| TWS | Yes | Yes |
| EQ | Yes (via app) | Yes |
| Power Input | USB-C | USB-C |
| Built-in Microphone | No | - |
| Weight | 2.4 lbs (1.1 kg) | 1.7 lbs (757 g) |
| Maximum SPL | 91dB (Manufacturer specified) | 96dB (measured by Alan Ross Reviews) |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| Aux Input | No | Yes |
| Strap | Yes (built-in loop) | - |
| Bass Extension (-10dB) | - | 61Hz |
| MicroSD Playback | - | Yes |
| Power Bank | - | Yes (USB-A) |
| USB Playback | - | Yes |
| Frequency Response | - | 50Hz - 20kHz (Manufacturer specified) |
| Amplifier Power | - | 40W |
Related Speaker Comparisons
More top alternatives to Bogasing M5: