Short answer: the Boat Stone 350, if you are buying new. The JBL Charge 3 ranks higher than it (#81 vs #135 of 157 medium speakers, 3.2/5 vs 2.3/5) but is discontinued, so only consider it used; the Boat Stone 350 is still sold new.
The JBL Charge 3 is the better-sounding, deeper-bass option. Doubles as a 6000mAh power bank for USB devices. ~20 hour battery life. Its bass reaches about 63Hz before falling 10dB, against 87Hz for the Boat Stone 350. It is rated for 20 hours of battery against 6 for the Boat Stone 350. The catch: Less clarity than the Flip 4.
The Boat Stone 350 is the lighter choice. 10W cylindrical stereo speaker with dual passive radiators, IPX7 water resistance, microSD card slot, and 3.5mm aux input. At 0.9 lbs (426 g) it weighs much less than the JBL Charge 3 at 1.8 lbs (800 g). It has an adjustable EQ, which the JBL Charge 3 lacks. It charges over USB-C rather than Micro USB. Watch for: Midrange peaks with rolled-off treble.
Buy the Boat Stone 350, since the JBL Charge 3 is discontinued and only worth hunting down used.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| JBL Charge 3 | Boat Stone 350 | |
|---|---|---|
| Price | $80 Discontinued | - |
| Ranked | #81 of 157 in Medium Size Portable Bluetooth Speakers | #135 of 157 in Medium Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 63Hz | 87Hz |
| Battery Life | 20 hours (Manufacturer specified) | 6 hours (Manufacturer specified) |
| Maximum SPL | 100dB (measured by Alan Ross Reviews) | - |
| Party Mode | Yes (Connect+ up to 100 speakers) | - |
| Power Bank | Yes (USB-A, 5V/2A) | - |
| Power Input | Micro USB | USB-C |
| Weight | 1.8 lbs (800 g) | 0.9 lbs (426 g) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 4.1 | 5.0 |
| Drivers | 2x 50mm fullrange | 2x 20mm tweeters + 2x 45mm drivers |
| Dimensions | 8.4” x 3.5” x 3.5” (213 x 88 x 88 mm) | 3.5” x 7.1” (90 x 180 mm) |
| Frequency Response | 65Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 20W RMS | 10W |
| App | Yes (JBL Connect) | No |
| Built-in Microphone | Yes | Yes |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| EQ | No | Yes (multiple modes) |
| IP Rating | IPX7 | IPX7 |
| Digital Aux Input | No | No |
| Omnidirectional | No | No |
| Stereo | Yes | Yes |
| TWS | No | Yes |
| MicroSD Playback | - | Yes |
| Strap | - | No |
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Prices on this page were last checked October 2, 2026 at 10:18 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
Boat Stone 350 eBay
Pros: 10W cylindrical stereo speaker with dual passive radiators, IPX7 water resistance, microSD card slot, and 3.5mm aux input. Measured bass extension of 87Hz (-10dB).
Cons: Midrange peaks with rolled-off treble. Bass extension limited below 87Hz.
Full Boat Stone 350 review and specifications →
| Amplifier Power | 10W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 87Hz |
| Battery Life | 6 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 5.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 3.5” x 7.1” (90 x 180 mm) |
| Drivers | 2x 20mm tweeters + 2x 45mm drivers |
| EQ | Yes (multiple modes) |
| IP Rating | IPX7 |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | No |
| TWS | Yes |
| Weight | 0.9 lbs (426 g) |
- Links
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
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