Short answer: the Soundcore Motion 100 on price, the Megaboom 4 on battery and features. The Motion 100 reaches its flattest response with Oluv’s EQ, but its bass is not very deep and its real-world battery falls well short of the claimed 12 hours, closer to 4. The Megaboom 4 is IP67 rated, floats, charges by USB-C over 20 hours and supports PartyUp for $200, though it distorts a lot at higher volumes and is not very loud.
The Ultimate Ears Megaboom 4 brings: It’s IP67 rated, floats, finally charges over USB-C, gets 20 hours of battery, and its PartyUp feature can sync it with other UE speakers. The tradeoff: it distorts a lot at higher volumes, rolls off the treble, and isn’t very loud, a real step back for the line.
What sells the Soundcore Motion 100: Applying Oluv’s EQ gets it to its flattest response. What doesn’t: its bass isn’t very deep, there’s slight distortion, real-world battery falls well short of the claimed 12 hours at higher volumes (closer to 4), charging takes about 5 hours, and there’s no charge-out for other devices.
Buy the Ultimate Ears Megaboom 4 new; the Soundcore Motion 100 is no longer sold new, so it only makes sense as a used find.
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Prices on this page were last checked November 11, 2026 at 3:26 AM 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
| Ultimate Ears Megaboom 4 | Soundcore Motion 100 | |
|---|---|---|
| Price | $200 | $47 Discontinued |
| Ranked | #173 of 179 in Medium Size Portable Bluetooth Speakers | #44 of 179 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Battery Life | 20 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| IP Rating | IP67 | IPX7 |
| Party Mode | Yes (PartyUp up to 50 speakers) | - |
| Stereo | No | Yes |
| Omnidirectional | Yes | No |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.1 | 5.3 |
| Dimensions | 3.4” x 3.4” x 8.9” (87 x 87 x 225 mm) | 7.5” x 3.1” x 2.4” (190 x 80 x 60 mm) |
| Drivers | 2x 50x50mm full-range + 2x 55x86mm passive radiators | 2x full-range drivers + 2x passive radiators |
| TWS | Yes | Yes |
| EQ | Yes (via app) | Yes |
| Power Input | USB-C | USB-C |
| Built-in Microphone | No | No |
| Weight | 2.4 lbs (1.1 kg) | 1.3 lbs (575 g) |
| Maximum SPL | 91dB (Manufacturer specified) | - |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC | AAC, LDAC, SBC |
| Aux Input | No | No |
| Strap | Yes (built-in loop) | - |
| Bass Extension (-10dB) | - | 65Hz |
| Power Bank | - | No |
| Frequency Response | - | 50Hz - 40kHz (Manufacturer specified) |
| Amplifier Power | - | 20W |
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