Short answer: the JBL Flip 4. It ranks #63 of 136 medium speakers by sound quality at $70; the Ultimate Ears Wonderboom 2 ranks #86 and costs $80, so there is little reason to consider the other one.
What the JBL Flip 4 offers: Less bass than a Flip 5. Peaky lower treble. Watch for: Battery failures are common.
What the Ultimate Ears Wonderboom 2 offers: IP67 rated and floats. Compact and light enough to toss in a bag. Watch for: Not stereo, barely any bass, recessed treble. Slightly boosted 93hz upper bass Dip at 9khz. You can tell from the micro USB that they are just feeding you the same crap hardware over and over, this is inexcusable for a product released in 2019. Not technically a 360 speaker, only front and rear.
Buy the JBL Flip 4. It ranks higher for sound quality than the Ultimate Ears Wonderboom 2 and costs less, so the other one has nothing left to offer.
Specifications Side By Side
| JBL Flip 4 | Ultimate Ears Wonderboom 2 | |
|---|---|---|
| Price | $70 Discontinued | $80 |
| Ranked | #63 of 136 in Medium Size Portable Bluetooth Speakers | #86 of 136 in Medium Size Portable Bluetooth Speakers |
| Aux Input | Yes | - |
| Bass Extension (-10dB) | 66Hz | 82Hz |
| Battery Life | 12 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| Bluetooth Latency | 300ms | - |
| Party Mode | Yes (Connect+ up to 100 speakers) | No |
| Power Input | Micro USB | Micro USB |
| TWS | No | Yes |
| Weight | 1.1 lbs / 510 g | 0.9 lbs / 420 g |
| Bluetooth Version | 4.2 | 5.1 |
| Drivers | 2x 40mm fullrange | 2x 40mm active drivers + 2x passive radiators |
| Dimensions | 6.9" x 2.8" x 2.6" (175 x 70 x 65 mm) | 4.1" x 3.8" (104 x 95.3 mm) |
| Frequency Response | 70Hz - 20kHz (Manufacturer specified) | - |
| Output Power | 16W RMS | - |
| IP Rating | IPX7 | IP67 |
| Discontinued | Yes | - |
| Max Volume | 92dB | 88dB |
| Digital Aux Input | No | No |
| Omnidirectional | No | Yes |
| Stereo | - | No |
| App | - | No |
| EQ | - | No |
| Built in Microphone | - | No |
Related Speaker Comparisons
A few more comparisons worth a look in the same class:
- Soundcore 3/Soundcore Select 2 vs Sony XB23
- Tribit Stormbox 2 vs Ultimate Ears Wonderboom 3
- W-King D320 vs Ultimate Ears Wonderboom 3
- Soundcore Glow vs JBL Flip 4
- JBL Flip 4 vs JBL Charge 3
Prices on this page were last checked August 27, 2026 at 10:09 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
JBL Flip 4: $70 Discontinued Amazon eBay
Pros: Less bass than a Flip 5. Peaky lower treble.
Cons: Battery failures are common. Discontinued.
Full JBL Flip 4 review and specifications →
| Aux Input | Yes |
|---|---|
| Bass Extension (-10dB) | 66Hz |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth Latency | 300ms |
| Bluetooth Version | 4.2 |
| Digital Aux Input | No |
| Dimensions | 6.9" x 2.8" x 2.6" (175 x 70 x 65 mm) |
| Discontinued | Yes |
| Drivers | 2x 40mm fullrange |
| Frequency Response | 70Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX7 |
| Max Volume | 92dB |
| Omnidirectional | No |
| Output Power | 16W RMS |
| Party Mode | Yes (Connect+ up to 100 speakers) |
| Power Input | Micro USB |
| TWS | No |
| Weight | 1.1 lbs / 510 g |
- Links
- Reviews, Comparisons and Sound Samples
- DLX Willington: JBL Flip 5 vs Flip 4 :Sound Battle: Almost to the size of the JBL Charge 3? More from DLXWillington →
- GYMCADDY: Best $100 Speaker? JBL Flip 4 Vs Sony XB20 Vs UE WONDERBOOM Vs Altec Mini Lifejacket 2 More from GYMCADDY →
- GYMCADDY: Best $100 Speaker? JBL Flip 4 Vs Sony XB20 Vs UE WONDERBOOM Vs Altec Mini Lifejacket 2
- Reddit Search for JBL Flip 4 Review
- Head-to-Head Comparisons
Ultimate Ears Wonderboom 2: $80 Amazon eBay
Pros: IP67 rated and floats. Compact and light enough to toss in a bag.
Cons: Not stereo, barely any bass, recessed treble. Slightly boosted 93hz upper bass Dip at 9khz. You can tell from the micro USB that they are just feeding you the same crap hardware over and over, this is inexcusable for a product released in 2019. Not technically a 360 speaker, only front and rear.
Full Ultimate Ears Wonderboom 2 review and specifications →
| App | No |
|---|---|
| Bass Extension (-10dB) | 82Hz |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth Version | 5.1 |
| 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 |
| EQ | No |
| IP Rating | IP67 |
| Max Volume | 88dB |
| Omnidirectional | Yes |
| Party Mode | No |
| Power Input | Micro USB |
| Stereo | No |
| TWS | Yes |
| Weight | 0.9 lbs / 420 g |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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- Ultimate Ears Wonderboom 2 vs Ultimate Ears Wonderboom 4
- Ultimate Ears Wonderboom 2 vs Ultimate Ears Boom 3
- Ultimate Ears Wonderboom 2 vs Ultimate Ears Megaboom 3
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- See all 74 comparisons