Short answer: the Wonderboom 4 stays small, but its bass is thuddy; the Charge 3 brings the power bank. The Wonderboom 4 is notable for its small size, but its bass is not as deep as the top-ranked speakers and is a little thuddy. The Charge 3 doubles as a 6000mAh power bank for USB devices, though it has less clarity than the Flip 4.
Buy the Ultimate Ears Wonderboom 4 new; the JBL Charge 3 is no longer sold new, so it only makes sense as a used find.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| JBL Charge 3 | Ultimate Ears Wonderboom 4 | |
|---|---|---|
| Price | $80 Discontinued | $78.95 |
| Ranked | #88 of 164 in Medium Size Portable Bluetooth Speakers | #106 of 164 in Medium Size Portable Bluetooth Speakers |
| Aux Input | Yes | No |
| Bass Extension (-10dB) | 63Hz | - |
| Battery Life | 20 hours (Manufacturer specified) | 14 hours (Manufacturer specified) |
| Maximum SPL | 100dB (measured by Alan Ross Reviews) | 87dB (Manufacturer specified) |
| Party Mode | Yes (Connect+ up to 100 speakers) | No |
| Power Bank | Yes (USB-A, 5V/2A) | No |
| Power Input | Micro USB | USB-C |
| Weight | 1.8 lbs (800 g) | 0.9 lbs (420 g) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 4.1 | 5.2 |
| Drivers | 2x 50mm fullrange | 2x 40mm active drivers + 2x passive radiators (46.1 x 65.2mm) |
| Dimensions | 8.4” x 3.5” x 3.5” (213 x 88 x 88 mm) | 4.1” x 3.8” (104 x 95.3 mm) |
| Frequency Response | 65Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 20W RMS | - |
| App | Yes (JBL Connect) | No |
| Built-in Microphone | Yes | No |
| Bluetooth Codecs | SBC | SBC |
| EQ | No | No |
| IP Rating | IPX7 | IP67 |
| Digital Aux Input | No | No |
| Omnidirectional | No | Yes |
| Stereo | Yes | No |
| TWS | No | Yes |
| Strap | - | Yes (built-in loop) |
Related Speaker Comparisons
How JBL Charge 3 compares with other leading options:
- Earfun Uboom L vs JBL Charge 3
- Soundcore Motion 300 vs JBL Charge 3
- Soundcore Motion+ vs JBL Charge 3
- Soundcore Boost “upgraded” 2021 vs JBL Charge 3
- Minirig 4 vs JBL Charge 3
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
JBL Charge 3: $80 Discontinued eBay
Newer model: the JBL Charge 6, ranked higher, rated 4.2/5.
Pros: Doubles as a 6000mAh power bank for USB devices. ~20 hour battery life. IPX7 rated; built-in noise/echo-cancelling speakerphone. Measured bass extension of 63Hz (-10dB).
Cons: Less clarity than the Flip 4. Battery failures are common. Discontinued.
Full JBL Charge 3 review and specifications →
| Amplifier Power | 20W RMS |
|---|---|
| App | Yes (JBL Connect) |
| Aux Input | Yes |
| Bass Extension (-10dB) | 63Hz |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.1 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 8.4” x 3.5” x 3.5” (213 x 88 x 88 mm) |
| Drivers | 2x 50mm fullrange |
| EQ | No |
| Frequency Response | 65Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX7 |
| Maximum SPL | 100dB (measured by Alan Ross Reviews) |
| Omnidirectional | No |
| Party Mode | Yes (Connect+ up to 100 speakers) |
| Power Bank | Yes (USB-A, 5V/2A) |
| Power Input | Micro USB |
| Stereo | Yes |
| TWS | No |
| Weight | 1.8 lbs (800 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: JBL Charge 5 vs JBL Charge 4 and Charge 3 - best JBL charge 5 review 2021? More from alanrossreviews →
- Alan Ross Reviews: JBL Flip 6 vs JBL Charge 4 and JBL Charge 3 - small one or a large one? 🤷♂️
- DLX Willington: JBL Flip 5 vs Flip 4 :Sound Battle: Almost to the size of the JBL Charge 3? More from DLXWillington →
- EnforcerMan: JBL CHARGE 3 VS TREBLAB HD77 - FULL REVIEW
- 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 Ultimate Ears Wonderboom
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