Short answer: the JBL Charge Essential 2. It ranks #37 of 150 medium speakers by sound quality, rated 3.8/5, at $130. The Earfun Uboom Slim ranks #41, rated 3.7/5, at $79, $51 cheaper, a saving that is not big enough to make up the sound-quality gap.
Why pick the JBL Charge Essential 2: A tough, compact 930g speaker with IPX7 water resistance, USB-C charging, a USB-A power-bank output and a claimed 20-hour battery life. The tradeoff: It is a pared-back Charge: no app EQ, no PartyBoost/party mode and no stereo-pair option.
Why pick the Earfun Uboom Slim: Excellent pricing, strong waterproof build (IPX7), good battery life (16 hours), smooth sound with volume compensation, speakerphone capability. The catch: Not as deep bass as others.
Buy the JBL Charge Essential 2. It is rated higher for sound quality, and saving $51 with the Earfun Uboom Slim does not make up for the sound-quality gap.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| JBL Charge Essential 2 | Earfun Uboom Slim | |
|---|---|---|
| Price | $130 | $79 |
| Ranked | #37 of 150 in Medium Size Portable Bluetooth Speakers | #41 of 150 in Medium Size Portable Bluetooth Speakers |
| App | No | No |
| Bass Extension (-10dB) | ~55Hz | ~63Hz |
| Battery Life | 20 hours (Manufacturer specified) | 16 hours (Manufacturer specified) |
| EQ | No | No |
| Party Mode | No | - |
| Power Bank | Yes (USB-A) | - |
| Stereo | No | Yes |
| Omnidirectional | No | No |
| Weight | 2.1 lbs (930 g) | 1.2 lbs (560 g) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.1 | 5.2 |
| Dimensions | 8.8” x 3.8” x 3.7” (223 x 96.5 x 94 mm) | 2.6”H x 7.1”W x 2.6”D (65 x 180 x 65 mm) |
| Drivers | 53mm x 93mm woofer, 20mm tweeter | 45mm speaker drivers |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) | - |
| IP Rating | IPX7 | IPX7 |
| Power Input | USB-C | USB-C |
| Amplifier Power | 40W | 20W |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) | SBC |
| Aux Input | No | Yes |
| TWS | No | Yes |
| Strap | No | - |
| Built-in Microphone | - | Yes |
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Prices on this page were last checked September 30, 2026 at 2:57 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 Essential 2: $130 eBay
Newer model: the JBL Charge Essential 3 SE, ranked lower, rated 3.7/5.
Pros: A tough, compact 930g speaker with IPX7 water resistance, USB-C charging, a USB-A power-bank output and a claimed 20-hour battery life. It delivers much of the Charge 5’s familiar punch and volume in a simpler package, with bass that reaches roughly 55Hz for this size. Measured bass extension of ~55Hz (-10dB).
Cons: It is a pared-back Charge: no app EQ, no PartyBoost/party mode and no stereo-pair option. It plays mono, has a little less bass authority than the Charge 5, and its IPX7 rating does not promise dust protection. Choose it for a good sale price, not for extra features.
Full JBL Charge Essential 2 review and specifications →
| Amplifier Power | 40W |
|---|---|
| App | No |
| Aux Input | No |
| Bass Extension (-10dB) | ~55Hz |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 5.1 |
| Digital Aux Input | No |
| Dimensions | 8.8” x 3.8” x 3.7” (223 x 96.5 x 94 mm) |
| Drivers | 53mm x 93mm woofer, 20mm tweeter |
| EQ | No |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX7 |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | Yes (USB-A) |
| Power Input | USB-C |
| Stereo | No |
| Strap | No |
| TWS | No |
| Weight | 2.1 lbs (930 g) |
- Links
- Reviews, Comparisons and Sound Samples
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Earfun Uboom Slim: $79 eBay
Pros: Excellent pricing, strong waterproof build (IPX7), good battery life (16 hours), smooth sound with volume compensation, speakerphone capability. Measured bass extension of ~63Hz (-10dB).
Cons: Not as deep bass as others. Warm tuned, peaks in the mids and lower treble, rolled off upper treble
Full Earfun Uboom Slim review and specifications →
| Amplifier Power | 20W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | ~63Hz |
| Battery Life | 16 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 2.6”H x 7.1”W x 2.6”D (65 x 180 x 65 mm) |
| Drivers | 45mm speaker drivers |
| EQ | No |
| IP Rating | IPX7 |
| Omnidirectional | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 1.2 lbs (560 g) |
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