Short answer: the Treblab HD77. It ranks #100 of 182 medium speakers by sound quality, rated 3.1/5, at $69.97; the Ultimate Ears Wonderboom 4 ranks #110, rated 2.9/5, at $64.99. With prices this close, go by the sound-quality ranking rather than the cost.
The Treblab HD77 is the longer-running pick. An affordable speaker with an aux input, long battery life, a speakerphone mic and pairing with a second unit. It is rated for 20 hours of battery against 14 for the Ultimate Ears Wonderboom 4. It keeps a wired aux input, which the Ultimate Ears Wonderboom 4 lacks. Watch for: Lacking quite a bit of bass compared to higher ranked speakers.
The Ultimate Ears Wonderboom 4 is the lighter choice. A small, tough waterproof speaker with a strap loop and USB-C charging, easy to clip on a bag for outdoor trips. At 0.9 lbs (420 g) it weighs noticeably less than the Treblab HD77 at 1.4 lbs (637 g). The tradeoff: Bass isn’t as deep as the top-ranked speakers and is a little thuddy.
Buy the Treblab HD77. It is rated higher for sound quality, and saving $4.98 with the Ultimate Ears Wonderboom 4 does not make up for the sound-quality gap.
Want more options? Browse the full Portable Bluetooth rankings.
Prices on this page were last checked November 14, 2026 at 6:17 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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Specifications Side By Side
| Treblab HD77 | Ultimate Ears Wonderboom 4 | |
|---|---|---|
| Price | $69.97 | $64.99 |
| Ranked | #100 of 182 in Medium Size Portable Bluetooth Speakers | #110 of 182 in Medium Size Portable Bluetooth Speakers |
| Bass Extension (-10dB) | ~66Hz | - |
| Battery Life | 20 hours (Manufacturer specified) | 14 hours (Manufacturer specified) |
| Built-in Microphone | Yes | No |
| IP Rating | IPX7 | IP67 |
| Stereo | No (front/rear drivers) | No |
| Omnidirectional | Yes | Yes |
| TWS | Yes | Yes |
| Weight | 1.4 lbs (637 g) | 0.9 lbs (420 g) |
| Wi-Fi | No | - |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.0 | 5.2 |
| Drivers | 2x 48mm fullrange | 2x 40mm active drivers + 2x passive radiators (46.1 x 65.2mm) |
| Dimensions | 7.4” x 3” x 3” (187 x 76 x 76 mm) | 4.1” x 3.8” (104 x 95.3 mm) |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 25W RMS | - |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC (additional codecs unverified) | SBC |
| App | No | No |
| Aux Input | Yes | No |
| EQ | No | No |
| Power Input | USB-C | USB-C |
| Maximum SPL | - | 87dB (Manufacturer specified) |
| Party Mode | - | No |
| Power Bank | - | No |
| Strap | - | Yes (built-in loop) |
Where the Ratings Come From
- Treblab HD77: reviews by EnforcerMan and Brian Unboxed.
- Ultimate Ears Wonderboom 4: reviews by Smart Home Sounds and YouTube.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
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