Short answer: the Ultimate Ears Wonderboom 4. It ranks #87 of 142 medium speakers by sound quality at $59.99; the B&O Beosound Explore ranks #112 and costs $299, which makes this an easy call rather than a real tradeoff.
What the Ultimate Ears Wonderboom 4 offers: Small size. Watch for: Bass isn’t as deep as the top-ranked speakers and is a little thuddy. Not much improvement over the previous Ultimate Ears Wonderboom 3 besides the USB-C charging port.
What the B&O Beosound Explore offers: IP67 rated with a rugged ‘seatbelt’ strap and carabiner hook. Real-world battery life around 20-24 hours. Distinctive anodized-aluminum design. Watch for: Huge lack of bass extension compared to competitors, overly hot ringing treble. Colored midrange. Just not great sounding overall.
Buy the Ultimate Ears Wonderboom 4. It ranks higher for sound quality than the B&O Beosound Explore and costs less, so there is no real case for the other one.
The B&O Beosound Explore is not a sound-quality pick. It sits near the bottom of the 142 medium speakers; there are better options higher up.
If battery life is a priority, the B&O Beosound Explore is rated for 27 hours versus 14 hours for the Ultimate Ears Wonderboom 4.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Ultimate Ears Wonderboom 4 | B&O Beosound Explore | |
|---|---|---|
| Price | $59.99 | $299.00 |
| Ranked | #87 of 142 in Medium Size Portable Bluetooth Speakers | #112 of 142 in Medium Size Portable Bluetooth Speakers |
| Bass Extension (-10dB) | - | ~70Hz |
| Battery Life | 14 hours (Manufacturer specified) | 27 hours (Manufacturer specified) |
| Bluetooth Latency | - | - |
| Maximum SPL | 87dB (Manufacturer specified) | 91dB (Manufacturer specified) |
| Power Input | USB-C | USB-C |
| Stereo | No | Yes |
| Omnidirectional | Yes | No |
| Weight | 0.9 lbs (420 g) | 1.4 lbs (631 g) |
| IP Rating | IP67 | IP67 |
| Bluetooth Version | 5.2 | 5.2 |
| Dimensions | 4.1" x 3.8" (104 x 95.3 mm) | 3.2" x 4.9" x 3.2" (81 x 124 x 81 mm) |
| Drivers | 2x 40mm active drivers + 2x passive radiators (46.1 x 65.2mm) | 2x 1.8" (46mm) full-range drivers |
| TWS | Yes | Yes |
| Party Mode | No | - |
| App | No | - |
| EQ | No | - |
| Built-in Microphone | No | No |
| Power Bank | No | No |
| Aux Input | No | - |
| Digital Aux Input | No | Yes (USB-C) |
| Bluetooth Codecs | SBC | SBC |
| Amplifier Power | - | 60W |
Related Speaker Comparisons
How Ultimate Ears Wonderboom 4 compares with other leading options:
- Ultimate Ears Wonderboom 4 vs Earfun Uboom L
- Ultimate Ears Wonderboom 4 vs Soundcore Motion 300
- Ultimate Ears Wonderboom 4 vs Soundcore Motion+
- Soundcore Boost “upgraded” 2021 vs Ultimate Ears Wonderboom 4
- Ultimate Ears Wonderboom 4 vs Minirig 4
Prices on this page were last checked September 16, 2026 at 12:41 AM 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.
As an eBay Partner, we may be compensated if you make a purchase.
The Two Speakers In Full
Ultimate Ears Wonderboom 4: $59.99 Amazon eBay
Pros: Small size.
Cons: Bass isn’t as deep as the top-ranked speakers and is a little thuddy. Not much improvement over the previous Ultimate Ears Wonderboom 3 besides the USB-C charging port.
Full Ultimate Ears Wonderboom 4 review and specifications →
| App | No |
|---|---|
| Aux Input | No |
| Bass Extension (-10dB) | |
| Battery Life | 14 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Latency | |
| Bluetooth Version | 5.2 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 4.1" x 3.8" (104 x 95.3 mm) |
| Drivers | 2x 40mm active drivers + 2x passive radiators (46.1 x 65.2mm) |
| EQ | No |
| IP Rating | IP67 |
| Maximum SPL | 87dB (Manufacturer specified) |
| Omnidirectional | Yes |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | No |
| TWS | Yes |
| Weight | 0.9 lbs (420 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Ultimate Ears Wonderboom 4 vs Ultimate Ears Wonderboom 3
- Ultimate Ears Wonderboom 4 vs Ultimate Ears Megaboom 3
- Ultimate Ears Wonderboom 4 vs Ultimate Ears Wonderboom 2
- Ultimate Ears Wonderboom 4 vs LG Xboom Grab
- Ultimate Ears Wonderboom 4 vs Ultimate Ears Wonderboom
- Ultimate Ears Wonderboom 4 vs Soundcore 2
- Ultimate Ears Wonderboom 4 vs Ultimate Ears Boom 4
- Ultimate Ears Wonderboom 4 vs Tribit Stormbox 2
- See all 89 comparisons
B&O Beosound Explore: $299.00 Amazon eBay
Pros: IP67 rated with a rugged ‘seatbelt’ strap and carabiner hook. Real-world battery life around 20-24 hours. Distinctive anodized-aluminum design. Measured bass extension of ~70Hz (-10dB).
Cons: Huge lack of bass extension compared to competitors, overly hot ringing treble. Colored midrange. Just not great sounding overall.
Full B&O Beosound Explore review and specifications →
| Amplifier Power | 60W |
|---|---|
| Bass Extension (-10dB) | ~70Hz |
| Battery Life | 27 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.2 |
| Built-in Microphone | No |
| Digital Aux Input | Yes (USB-C) |
| Dimensions | 3.2" x 4.9" x 3.2" (81 x 124 x 81 mm) |
| Drivers | 2x 1.8" (46mm) full-range drivers |
| IP Rating | IP67 |
| Maximum SPL | 91dB (Manufacturer specified) |
| Omnidirectional | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 1.4 lbs (631 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.
- Head-to-Head Comparisons
- B&O Beosound Explore vs Tribit Stormbox Mini+
- B&O Beosound Explore vs Sony SRS-XE200
- B&O Beosound Explore vs W-King D8 Mini
- B&O Beosound Explore vs Soundcore Flare 2
- B&O Beosound Explore vs Doss E-Go II
- B&O Beosound Explore vs Sony SRS-XB30
- B&O Beosound Explore vs LG Xboom Go PL5
- B&O Beosound Explore vs Teufel Rockster Go
- See all 63 comparisons