Short answer: the JBL Flip 4. It ranks #63 of 136 medium speakers by sound quality at $70; the Ultimate Ears Wonderboom ranks #87 and costs $79, so there is not much of a tradeoff to weigh.
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 offers: IP67 rated and floats. Compact, light, and simple to use. Watch for: Not stereo, barely any bass, recessed treble. Dip at 9khz. Low mid bass distortion. 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 and costs less, so the other one has nothing left to offer.
Specifications Side By Side
| JBL Flip 4 | Ultimate Ears Wonderboom | |
|---|---|---|
| Price | $70 Discontinued | $79 Discontinued |
| Ranked | #63 of 136 in Medium Size Portable Bluetooth Speakers | #87 of 136 in Medium Size Portable Bluetooth Speakers |
| Aux Input | Yes | - |
| Bass Extension (-10dB) | 66Hz | - |
| Battery Life | 12 hours (Manufacturer specified) | 10 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 / 425 g |
| Bluetooth Version | 4.2 | - |
| Drivers | 2x 40mm fullrange | 2x 1.6" active drivers + 2x 1.8" x 2.6" passive radiators |
| Dimensions | 6.9" x 2.8" x 2.6" (175 x 70 x 65 mm) | - |
| Frequency Response | 70Hz - 20kHz (Manufacturer specified) | - |
| Output Power | 16W RMS | - |
| IP Rating | IPX7 | IPX7 |
| Discontinued | Yes | Yes |
| Max Volume | 92dB | - |
| Digital Aux Input | No | No |
| Omnidirectional | No | Yes |
| Stereo | - | No |
| App | - | No |
| EQ | - | No |
| Built in Microphone | - | No |
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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: $79 Discontinued eBay
Pros: IP67 rated and floats. Compact, light, and simple to use.
Cons: Not stereo, barely any bass, recessed treble. Dip at 9khz. Low mid bass distortion. Not technically a 360 speaker, only front and rear. Discontinued.
Full Ultimate Ears Wonderboom review and specifications →
| App | No |
|---|---|
| Battery Life | 10 hours (Manufacturer specified) |
| Built in Microphone | No |
| Digital Aux Input | No |
| Discontinued | Yes |
| Drivers | 2x 1.6" active drivers + 2x 1.8" x 2.6" passive radiators |
| EQ | No |
| IP Rating | IPX7 |
| Omnidirectional | Yes |
| Party Mode | No |
| Power Input | Micro USB |
| Stereo | No |
| TWS | Yes |
| Weight | 0.9 lbs / 425 g |
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