Short answer: the Soundcore 2. It ranks #81 of 136 medium speakers by sound quality at $29.98; the Ultimate Ears Boom 4 ranks #88 and costs $105, so there is little reason to consider the other one.
What the Soundcore 2 offers: 24+ hour battery life from a 5200mAh cell. Very light (0.8 lb) and compact. IPX7 rated with a soft, grippy silicone coating. Watch for: Bass doesn’t go as deep as others
What the Ultimate Ears Boom 4 offers: IP67 rated, floats, and finally charges via USB-C instead of the older Booms’ Micro-USB. 15 hour battery. Customizable EQ and speaker-pairing via the UE app. Watch for: Not much improvement over the old ones. Weak bass extension and thuddy bass. Gets distorted above 90%
Buy the Soundcore 2. It ranks higher for sound quality than the Ultimate Ears Boom 4 and costs less, so there is no real case for the other one.
There is a real battery-life gap here: the Soundcore 2 is rated for 24 hours, the Ultimate Ears Boom 4 only 15 hours.
Specifications Side By Side
| Soundcore 2 | Ultimate Ears Boom 4 | |
|---|---|---|
| Price | $29.98 | $105 |
| Ranked | #81 of 136 in Medium Size Portable Bluetooth Speakers | #88 of 136 in Medium Size Portable Bluetooth Speakers |
| Aux Input | Yes | No |
| Battery Life | 24 hours (Manufacturer specified) | 15 hours (Manufacturer specified) |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Weight | 0.7 lbs / 318 g | 1.4 lbs / 620 g |
| Bluetooth Version | 5.0 | 5.1 |
| Drivers | 2x 38mm fullrange | 2x 1.57" (40mm) active drivers + 2x 1.81" x 2.57" (46.1 x 65.2mm) passive radiators |
| Dimensions | 6.6" x 1.9" x 2.2" (168 x 47 x 56 mm) | 7.2" x 2.9" x 2.9" (184 x 73 x 73 mm) |
| Frequency Response | 70Hz - 20kHz (Manufacturer specified) | - |
| Output Power | 12W | - |
| App | No | Yes |
| Built in Microphone | No | No |
| EQ | No | Yes (via app) |
| Bluetooth Codecs | SBC | - |
| IP Rating | IPX7 | IP67 |
| Digital Aux Input | No | No |
| Power Input | - | USB-C |
| TWS | - | Yes |
| Power Bank | - | No |
| Max Volume | - | 85dBC |
Related Speaker Comparisons
A few more comparisons worth a look in the same class:
- JBL Flip 5 vs Tribit Stormbox 2
- Tribit Stormbox vs Tribit Stormbox 2
- Ultimate Ears Wonderboom 4 vs Ultimate Ears Wonderboom
- Ultimate Ears Boom 4 vs Tribit Stormbox Mini+
- Tribit Xsound Go vs Ultimate Ears Boom 4
Prices on this page were last checked August 27, 2026 at 10:09 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 2: $29.98 Amazon eBay
Pros: 24+ hour battery life from a 5200mAh cell. Very light (0.8 lb) and compact. IPX7 rated with a soft, grippy silicone coating.
Cons: Bass doesn’t go as deep as others
Full Soundcore 2 review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.0 |
| Built in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 6.6" x 1.9" x 2.2" (168 x 47 x 56 mm) |
| Drivers | 2x 38mm fullrange |
| EQ | No |
| Frequency Response | 70Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX7 |
| Omnidirectional | No |
| Output Power | 12W |
| Stereo | Yes |
| Weight | 0.7 lbs / 318 g |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Soundcore 2 vs Tribit Stormbox 2
- Soundcore 2 vs LG Xboom Grab
- Soundcore 2 vs Tribit Xsound Surf
- Soundcore 2 vs Ultimate Ears Megaboom 3
- Soundcore 2 vs Tribit Xsound Go
- Soundcore 2 vs Ultimate Ears Wonderboom 4
- Soundcore 2 vs Ultimate Ears Wonderboom 3
- Soundcore 2 vs Sony ULT Field 1
- See all 71 comparisons
Ultimate Ears Boom 4: $105 Amazon eBay
Pros: IP67 rated, floats, and finally charges via USB-C instead of the older Booms’ Micro-USB. 15 hour battery. Customizable EQ and speaker-pairing via the UE app.
Cons: Not much improvement over the old ones. Weak bass extension and thuddy bass. Gets distorted above 90%
Full Ultimate Ears Boom 4 review and specifications →
| App | Yes |
|---|---|
| Aux Input | No |
| Battery Life | 15 hours (Manufacturer specified) |
| Bluetooth Version | 5.1 |
| Built in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 7.2" x 2.9" x 2.9" (184 x 73 x 73 mm) |
| Drivers | 2x 1.57" (40mm) active drivers + 2x 1.81" x 2.57" (46.1 x 65.2mm) passive radiators |
| EQ | Yes (via app) |
| IP Rating | IP67 |
| Max Volume | 85dBC |
| Omnidirectional | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 1.4 lbs / 620 g |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Ultimate Ears Boom 4 vs Ultimate Ears Boom 3
- Ultimate Ears Boom 4 vs Ultimate Ears Wonderboom
- Ultimate Ears Boom 4 vs Klipsch Groove/Heritage Groove
- Ultimate Ears Boom 4 vs Ultimate Ears Wonderboom 2
- Ultimate Ears Boom 4 vs Ultimate Ears Wonderboom 3
- Ultimate Ears Boom 4 vs Ultimate Ears Wonderboom 4
- Ultimate Ears Boom 4 vs Sony SRS-XE300
- Ultimate Ears Boom 4 vs Tribit Stormbox
- See all 74 comparisons