Short answer: the Ultimate Ears Wonderboom 4, if you are buying new. The Bogasing M4 ranks higher than it (#28 vs #106 of 164 medium speakers, 4.0/5 vs 2.9/5) but is discontinued, so only consider it used; the Ultimate Ears Wonderboom 4 is still sold new at $78.95.
The Bogasing M4 is the better-sounding, longer-running choice. Super Bass mode gives the most balanced sound. It is rated for 24 hours of battery against 14 for the Ultimate Ears Wonderboom 4. It keeps a wired aux input, which the Ultimate Ears Wonderboom 4 lacks. It plays in stereo from a single unit, unlike the Ultimate Ears Wonderboom 4. Watch for: It sounds a bit harsh and thin.
The Ultimate Ears Wonderboom 4 is the lighter pick. At 0.9 lbs (420 g) it weighs much less than the Bogasing M4 at 1.6 lbs (731 g). The catch: Bass isn’t as deep as the top-ranked speakers and is a little thuddy.
Buy the Ultimate Ears Wonderboom 4 if you want one new; the Bogasing M4 is discontinued, so only look for it used.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Bogasing M4 | Ultimate Ears Wonderboom 4 | |
|---|---|---|
| Price | $45.99 Discontinued | $78.95 |
| Ranked | #28 of 164 in Medium Size Portable Bluetooth Speakers | #106 of 164 in Medium Size Portable Bluetooth Speakers |
| App | No | No |
| Aux Input | Yes | No |
| Bass Extension (-10dB) | 54Hz | - |
| Battery Life | 24 hours (Manufacturer specified) | 14 hours (Manufacturer specified) |
| EQ | No | No |
| IP Rating | IPX7 | IP67 |
| Bluetooth Latency | 150ms | - |
| Maximum SPL | 99dB (measured by Alan Ross Reviews) | 87dB (Manufacturer specified) |
| MicroSD Playback | Yes | - |
| Power Input | USB-C | USB-C |
| Stereo | Yes | No |
| Omnidirectional | No | Yes |
| TWS | Yes | Yes |
| Weight | 1.6 lbs (731 g) | 0.9 lbs (420 g) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.0 | 5.2 |
| Amplifier Power | 40W | - |
| Drivers | 52mm speaker unit | 2x 40mm active drivers + 2x passive radiators (46.1 x 65.2mm) |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) | SBC |
| Dimensions | 3.1”H x 8.4”W x 2.5”D (80 x 214 x 63 mm) | 4.1” x 3.8” (104 x 95.3 mm) |
| Party Mode | - | No |
| Built-in Microphone | - | No |
| Power Bank | - | No |
| Strap | - | Yes (built-in loop) |
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Prices on this page were last checked October 4, 2026 at 9:58 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.
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The Two Speakers In Full
Bogasing M4: $45.99 Discontinued eBay
Newer model: the Bogasing M5, ranked lower, rated 3.5/5.
Pros: Bogasing M4 uses 52mm speaker unit. Its 731 g, claimed 24 hours (Manufacturer specified) battery life, IPX7 protection, aux input, up to 99dB and stereo playback make it a practical option for its intended room or portable use. Super Bass mode gives the most balanced sound. Measured bass extension of 54Hz (-10dB).
Cons: Bass is limited by its 54Hz specification. There is no companion app. No EQ adjustment. It sounds a bit harsh and thin. Discontinued.
Full Bogasing M4 review and specifications →
| Amplifier Power | 40W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 54Hz |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Bluetooth Latency | 150ms |
| Bluetooth Version | 5.0 |
| Digital Aux Input | No |
| Dimensions | 3.1”H x 8.4”W x 2.5”D (80 x 214 x 63 mm) |
| Drivers | 52mm speaker unit |
| EQ | No |
| IP Rating | IPX7 |
| Maximum SPL | 99dB (measured by Alan Ross Reviews) |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 1.6 lbs (731 g) |
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: Bogasing M4 Review - vs JBL Charge 5 & Motion Plus - a new contender? More from alanrossreviews →
- Alan Ross Reviews: Bose Soundlink Flex vs Soundcore Boost vs Bogasing M4 - cheap or Bose?
- Alan Ross Reviews: Bogasing M4 or Soundcore Boost or Maxsound Plus for $50 champion?? 🤷♀️
- Alan Ross Reviews: Tronsmart Element Force review vs Bogasing M4 - cheap speaker 🤑
- Head-to-Head Comparisons
Ultimate Ears Wonderboom 4: $78.95 Amazon eBay
Older models: the Ultimate Ears Wonderboom 3 (ranked lower, rated 2.9/5), the Ultimate Ears Wonderboom 2 (ranked lower, rated 2.9/5) and the Ultimate Ears Wonderboom (ranked lower, rated 2.9/5).
Pros: Small size.
Cons: Bass isn’t as deep as the top-ranked speakers and is a little thuddy. Not much improvement over the previous Ultimate Ears Wonderboom 3 besides the USB-C charging port.
Full Ultimate Ears Wonderboom 4 review and specifications →
| App | No |
|---|---|
| Aux Input | No |
| Battery Life | 14 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.2 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 4.1” x 3.8” (104 x 95.3 mm) |
| Drivers | 2x 40mm active drivers + 2x passive radiators (46.1 x 65.2mm) |
| EQ | No |
| IP Rating | IP67 |
| Maximum SPL | 87dB (Manufacturer specified) |
| Omnidirectional | Yes |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | No |
| Strap | Yes (built-in loop) |
| TWS | Yes |
| Weight | 0.9 lbs (420 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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- Ultimate Ears Wonderboom 4 vs LG Xboom Grab
- Ultimate Ears Wonderboom 4 vs Ultimate Ears Wonderboom
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