Short answer: the Ultimate Ears Wonderboom 4, though neither ranks well in its class. It ranks #109 of 179 medium speakers by sound quality, rated 2.9/5, at $64.99; the Skullcandy Terrain XL ranks #168, rated 2.1/5, and costs $79.99, which makes this an easy call rather than a real tradeoff. Both are rated below 3.0/5 among the 179 medium speakers, so if sound quality matters, consider the EarFun Uboom L instead, ranked #2 at $49.79.
The Ultimate Ears Wonderboom 4 is the better-sounding, lighter option. 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 Skullcandy Terrain XL at 1.4 lbs (635 g). Watch for: Bass isn’t as deep as the top-ranked speakers and is a little thuddy.
What the Skullcandy Terrain XL does well: A very loud, long running Terrain speaker, waterproof with a wrist wrap and a built in microphone. It links with other speakers (SKDY Multi-Link, up to 99 speakers), which the Ultimate Ears Wonderboom 4 cannot. Watch for: Shares the Terrain line’s tuning: no bass, very rolled off treble, and distortion in the treble.
Buy the Ultimate Ears Wonderboom 4. It is rated higher for sound quality than the Skullcandy Terrain XL and costs less, which makes it the one to get unless you need something the other one does better.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Prices on this page were last checked November 7, 2026 at 7:34 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
| Ultimate Ears Wonderboom 4 | Skullcandy Terrain XL | |
|---|---|---|
| Price | $64.99 | $79.99 |
| Ranked | #109 of 179 in Medium Size Portable Bluetooth Speakers | #168 of 179 in Medium Size Portable Bluetooth Speakers |
| Battery Life | 14 hours (Manufacturer specified) | 18 hours (Manufacturer specified) |
| Maximum SPL | 87dB (Manufacturer specified) | 95dB SPL (Manufacturer specified) |
| Power Input | USB-C | USB-C |
| Stereo | No | No |
| Omnidirectional | Yes | No |
| Weight | 0.9 lbs (420 g) | 1.4 lbs (635 g) |
| IP Rating | IP67 | IPX7 |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.2 | 5.3 |
| Dimensions | 4.1” x 3.8” (104 x 95.3 mm) | 7.5” x 3.5” x 3.5” (190.5 x 88.9 x 88.9 mm) |
| Drivers | 2x 40mm active drivers + 2x passive radiators (46.1 x 65.2mm) | 2x 48mm drivers + passive radiators |
| TWS | Yes | Yes |
| Party Mode | No | Yes (SKDY Multi-Link, up to 99 speakers) |
| App | No | Yes |
| EQ | No | No |
| Built-in Microphone | No | Yes |
| Power Bank | No | - |
| Aux Input | No | No |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC | SBC |
| Strap | Yes (built-in loop) | Yes (wrist strap) |
| Amplifier Power | - | 2 x 20W |
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