Short answer: both are discontinued, so this only matters if you are buying used. Used, the JBL Flip Essential is the better pick: it ranks #90 of 175 medium speakers by sound quality (rated 3.2/5), against #112 (rated 2.9/5) for the Ultimate Ears Wonderboom. If you want one new, the JBL Flip Essential 3 SE replaces the JBL Flip Essential and is rated 3.6/5 at $113.82.
The JBL Flip Essential is the better-sounding choice. A genuinely portable 1 lbs (471 g) speaker with IPX7 water resistance, a 3.5mm aux input and 16W output from two full-range drivers. It keeps a wired aux input, which the Ultimate Ears Wonderboom lacks. The tradeoff: Bass is lighter than the JBL Flip 5 and the 80Hz claimed low-frequency limit means it cannot deliver real low-end weight.
The case for the Ultimate Ears Wonderboom: IP67 rated and floats. The catch: Not stereo, barely any bass, recessed treble.
Buy the JBL Flip Essential only if you find one used in good condition; both are discontinued, and it is the better rated of the two. For a new speaker, buy the JBL Flip Essential 3 SE, which replaces the JBL Flip Essential.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| JBL Flip Essential | Ultimate Ears Wonderboom | |
|---|---|---|
| Price | $130 Discontinued | $79 Discontinued |
| Ranked | #90 of 175 in Medium Size Portable Bluetooth Speakers | #112 of 175 in Medium Size Portable Bluetooth Speakers |
| App | No | No |
| Battery Life | 10 hours (Manufacturer specified) | 10 hours (Manufacturer specified) |
| EQ | No | No |
| Party Mode | No | No |
| Weight | / 1 lbs (471 g) | 0.9 lbs (425 g) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 4.1 | - |
| Drivers | 2x 40mm fullrange | 2x 1.6” active drivers + 2x 1.8” x 2.6” passive radiators |
| Dimensions | 6.7” x 2.5” x 2.5” (169 x 64 x 64 mm) | 4” x 3.7” (102 x 93.5 mm) |
| Frequency Response | 80Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 16W RMS | - |
| Aux Input | Yes (3.5mm) | No |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| Built-in Microphone | No | No |
| IP Rating | IPX7 | IPX7 |
| Digital Aux Input | No | No |
| Omnidirectional | No | Yes |
| Stereo | No | No |
| TWS | No | Yes |
| Power Input | Micro USB | Micro USB |
| Strap | - | Yes (built-in loop) |
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- JBL Flip Essential vs Minirig 4
Prices on this page were last checked October 12, 2026 at 4:13 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 Essential: $130 Discontinued eBay
Newer model: the JBL Flip Essential 3 SE, ranked higher, estimated 3.6/5, released Apr 2026. See every JBL Flip Essential generation.
Pros: A genuinely portable 471g speaker with IPX7 water resistance, a 3.5mm aux input and 16W output from two full-range drivers. It is a simple, no-app option for wired sources, travel and casual listening where its cylindrical shape and modest size are a genuine advantage.
Cons: Bass is lighter than the JBL Flip 5 and the 80Hz claimed low-frequency limit means it cannot deliver real low-end weight. Battery life is only a claimed 10 hours, there is no speakerphone, EQ or party mode, and its older Bluetooth 4.1 platform and discontinued status make it a basic used-market choice.
Full JBL Flip Essential review and specifications →
| Released | Nov 2019 (6 years ago) |
|---|---|
| Amplifier Power | 16W RMS |
| App | No |
| Aux Input | Yes (3.5mm) |
| Battery Life | 10 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.1 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 6.7” x 2.5” x 2.5” (169 x 64 x 64 mm) |
| Drivers | 2x 40mm fullrange |
| EQ | No |
| Frequency Response | 80Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX7 |
| Omnidirectional | No |
| Party Mode | No |
| Power Input | Micro USB |
| Stereo | No |
| TWS | No |
| Weight | / 1 lbs (471 g) |
- Links
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Ultimate Ears Wonderboom: $79 Discontinued eBay
Newer model: the Ultimate Ears Wonderboom 4, ranked higher, rated 2.9/5, released Jun 2024. See every Ultimate Ears Wonderboom, Boom and Megaboom generation.
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 →
| Released | Nov 2017 (8 years ago) |
|---|---|
| App | No |
| Aux Input | No |
| Battery Life | 10 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 4” x 3.7” (102 x 93.5 mm) |
| 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 |
| Strap | Yes (built-in loop) |
| TWS | Yes |
| Weight | 0.9 lbs (425 g) |
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