Short answer: the Soundcore Boom Go 3i. It ranks #2 of 47 small speakers by sound quality, rated 4.4/5, at $59.99; the Noxgear 39g ranks #46, rated 2.2/5, and costs $69.95, which makes this an easy call rather than a real tradeoff.
What the Soundcore Boom Go 3i does well: An exceptionally rugged 380g mini speaker with IP68 protection, a floating sound-forward design, app EQ, RGB lighting, a battery display, USB-C power-bank output and Auracast/TWS linking. The catch: This is still a 15W mono speaker: bass impact and stereo width are limited, and critical listeners may find the upper treble piercing or metallic.
The case for the Noxgear 39g: Magnetic clip attaches through a shirt/jacket without pins. Watch for: It sounds worse than a clock radio with the worst bass of any speaker.
Buy the Soundcore Boom Go 3i. It is rated higher for sound quality than the Noxgear 39g and costs less, so only choose the other one for a particular feature it does better.
There is a real battery-life gap here: the Soundcore Boom Go 3i is rated for 24 hours, the Noxgear 39g only 15 hours.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Soundcore Boom Go 3i | Noxgear 39g | |
|---|---|---|
| Price | $59.99 | $69.95 |
| Ranked | #2 of 47 in Small Size Portable Bluetooth Speakers | #46 of 47 in Small Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | No | No |
| Battery Life | 24 hours (Manufacturer specified) | 15 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC | SBC |
| Built-in Microphone | Yes | Yes |
| EQ | Yes | No |
| IP Rating | IP68 | IPX7 |
| Party Mode | Yes (Auracast) | No |
| Power Bank | Yes (USB-C) | No |
| Power Input | USB-C | USB-C |
| Stereo | No | No |
| Omnidirectional | Pointing up | Pointing up |
| TWS | Yes | No |
| Weight | 0.8 lbs (380 g) | 0.1 lbs (39 g) |
| Bluetooth Version | 6.0 | - |
| Amplifier Power | 15W | - |
| Dimensions | 4” x 4.2” x 1.8” (102.1 x 105.9 x 45.5 mm) | 2.6” x 1.6” x 0.9” (66 x 41 x 23 mm) |
| Drivers | 25mm tweeter + 42mm woofer + passive radiators | N52 neodymium |
| Maximum SPL | 92dB (Manufacturer specified) | - |
| Digital Aux Input | No | No |
| Lights | Yes | - |
| Strap | Yes (detachable strap) | Yes (clip) |
| Bass Extension (-10dB) | - | ~300Hz |
| Charging Time | - | 3 hours |
Related Speaker Comparisons
More worthwhile head-to-heads for Soundcore Boom Go 3i:
- Soundcore Boom Go 3i vs Tribit Stormbox Micro 2
- Minirig Mini 2 vs Soundcore Boom Go 3i
- Minirig Mini vs Soundcore Boom Go 3i
- Soundcore Boom Go 3i vs Tribit Stormbox Micro
- Soundcore Boom Go 3i vs Tribit Stormbox Micro 3
Prices on this page were last checked September 26, 2026 at 11:14 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
Soundcore Boom Go 3i: $59.99 Amazon AliExpress eBay
Pros: An exceptionally rugged 380g mini speaker with IP68 protection, a floating sound-forward design, app EQ, RGB lighting, a battery display, USB-C power-bank output and Auracast/TWS linking. It reaches about 92dB and independent testing finds it lasts nearly six hours at maximum volume with lights and BassUp enabled, matching its demanding claim.
Cons: This is still a 15W mono speaker: bass impact and stereo width are limited, and critical listeners may find the upper treble piercing or metallic. It is directional by design, so the sound changes off-axis, and independent reviews note it lacks a built-in microphone; it is far better for rugged outdoor background music than a large gathering.
Setup: Try out Oluv’s EQ which slightly improves the sound
Full Soundcore Boom Go 3i review and specifications →
| Amplifier Power | 15W |
|---|---|
| App | Yes |
| Aux Input | No |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 6.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 4” x 4.2” x 1.8” (102.1 x 105.9 x 45.5 mm) |
| Drivers | 25mm tweeter + 42mm woofer + passive radiators |
| EQ | Yes |
| IP Rating | IP68 |
| Lights | Yes |
| Maximum SPL | 92dB (Manufacturer specified) |
| Omnidirectional | Pointing up |
| Party Mode | Yes (Auracast) |
| Power Bank | Yes (USB-C) |
| Power Input | USB-C |
| Stereo | No |
| Strap | Yes (detachable strap) |
| TWS | Yes |
| Weight | 0.8 lbs (380 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Oluv Patreon: SoundCore Boom Go 3i - first look More from Oluv’Sone →
- Techder Audios: Soundcore Boom Go 3i - Soundtest HOW GOOD IS 15W? WITH BASS UP 2.0!? More from techderaudios →
- Storytripper HD: Bose Micro 2 vs Soundcore Boom Go 3i vs Tribit Micro 2 More from storytripperhd →
- Gi Rides: Soundcore Boom Go 3i vs Tribit Stormbox Micro 2 Binaural Audio
- TecH Moe: Soundcore Boom Go 3i: The Mini Speaker to Buy! More from TecHMoE →
- Head-to-Head Comparisons
- Soundcore Boom Go 3i vs Tribit Stormbox Micro 2
- Soundcore Boom Go 3i vs Minirig Mini 2
- Soundcore Boom Go 3i vs Minirig Mini
- Soundcore Boom Go 3i vs Tribit Stormbox Micro
- Soundcore Boom Go 3i vs Tribit Stormbox Micro 3
- Soundcore Boom Go 3i vs Teufel Boomster Go
- Soundcore Boom Go 3i vs Soundcore Mini 3 Pro
- Soundcore Boom Go 3i vs Soundcore Mini 3
- See all 59 comparisons
Noxgear 39g: $69.95 Amazon eBay
Pros: Magnetic clip attaches through a shirt/jacket without pins. Blue safety light for visibility when running in low light. It’s only 39g of weight. ~15 hour battery life. Measured bass extension of ~300Hz (-10dB).
Cons: It sounds worse than a clock radio with the worst bass of any speaker. It’s a huge compromise in sound for the small weight.
Full Noxgear 39g review and specifications →
| App | No |
|---|---|
| Aux Input | No |
| Bass Extension (-10dB) | ~300Hz |
| Battery Life | 15 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Built-in Microphone | Yes |
| Charging Time | 3 hours |
| Digital Aux Input | No |
| Dimensions | 2.6” x 1.6” x 0.9” (66 x 41 x 23 mm) |
| Drivers | N52 neodymium |
| EQ | No |
| IP Rating | IPX7 |
| Omnidirectional | Pointing up |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | No |
| Strap | Yes (clip) |
| TWS | No |
| Weight | 0.1 lbs (39 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Noxgear 39g vs Xiaomi Sound Pocket
- Noxgear 39g vs Lenovo 700 Ultraportable Bluetooth Speaker
- Noxgear 39g vs Harman Kardon Neo
- Noxgear 39g vs Harman Kardon Esquire Mini 2
- Noxgear 39g vs Monster Atomic Atom
- Noxgear 39g vs Tribit PocketGo
- Noxgear 39g vs JBL Go 3
- Noxgear 39g vs JBL Go 4
- See all 18 comparisons