Short answer: the JBL Go 4. It ranks #30 of 62 small speakers by sound quality, rated 3.2/5, at $49.95; the Noxgear 0.1 lbs (39 g) ranks #61, rated 2.2/5, and costs $69.95, so there is little reason to consider the other one.
The JBL Go 4 is the better-sounding, deeper-bass pick. A pocket sized waterproof mini speaker with a loop for hanging and app EQ. Its bass reaches about 82Hz before falling 10dB, against 300Hz for the Noxgear 0.1 lbs (39 g). It links with other speakers (Auracast), which the Noxgear 0.1 lbs (39 g) cannot. It has an adjustable EQ, which the Noxgear 0.1 lbs (39 g) lacks. The catch: Not much bass at all, especially with electronic/bass-heavy tracks pushed past ~50% volume.
The Noxgear 0.1 lbs (39 g) is the longer-running, lighter option. An extremely light speaker that clips magnetically to a shirt, with a safety light for runners in low light. It is rated for 15 hours of battery against 7 for the JBL Go 4. At 0.1 lbs (39 g) it weighs much less than the JBL Go 4 at 0.4 lbs (190 g). The catch: It sounds worse than a clock radio with the worst bass of any speaker.
Buy the JBL Go 4. It is rated higher for sound quality than the Noxgear 0.1 lbs (39 g) and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Want more options? Browse the full Portable Bluetooth rankings.
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Specifications Side By Side
| JBL Go 4 | Noxgear 39g | |
|---|---|---|
| Price | $49.95 | $69.95 |
| Ranked | #30 of 62 in Small Size Portable Bluetooth Speakers | #61 of 62 in Small Size Portable Bluetooth Speakers |
| App | Yes | No |
| Bass Extension (-10dB) | ~82Hz | ~300Hz |
| Battery Life | 7 hours (Manufacturer specified) | 15 hours (Manufacturer specified) |
| EQ | Yes | No |
| IP Rating | IP67 | IPX7 |
| Party Mode | Yes (Auracast) | No |
| Power Bank | No | No |
| Power Input | USB-C | USB-C |
| Stereo | No | No |
| Omnidirectional | Pointing up | Pointing up |
| TWS | Yes | No |
| Weight | 0.4 lbs (190 g) | 0.1 lbs (39 g) |
| Aux Input | No | No |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Built-in Microphone | Yes | Yes |
| Bluetooth Version | 5.3 | 5.2 |
| Frequency Response | 90Hz - 20kHz (Manufacturer specified) | - |
| Dimensions | 3.7” x 3” x 1.7” (94.3 x 75.7 x 42.2 mm) | 2.6” x 1.6” x 0.9” (66 x 41 x 23 mm) |
| Charging Time | 3 hours | 3 hours |
| Drivers | 45mm | N52 neodymium |
| Amplifier Power | 4.2W | - |
| Digital Aux Input | No | No |
| Strap | Yes (built-in loop) | Yes (clip) |
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