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 ranks #169, rated 2.1/5, at $49.93, $15.06 cheaper, a saving that is not big enough to make up the sound-quality gap. Both are rated below 3.0/5 among the 179 medium speakers; for better sound, the EarFun Uboom L ranks #2 at $49.79.
The Ultimate Ears Wonderboom 4 is the better-sounding choice. A small, tough waterproof speaker with a strap loop and USB-C charging, easy to clip on a bag for outdoor trips. The catch: Bass isn’t as deep as the top-ranked speakers and is a little thuddy.
Why pick the Skullcandy Terrain: A waterproof speaker with a wrist wrap for carrying and pairing with other Skullcandy speakers. It links with other speakers (SKDY Multi-Link, up to 99 speakers), which the Ultimate Ears Wonderboom 4 cannot. Watch for: No bass, very rolled off treble.
Buy the Ultimate Ears Wonderboom 4. It is rated higher for sound quality, and saving $15.06 with the Skullcandy Terrain does not make up for the sound-quality gap.
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Specifications Side By Side
| Ultimate Ears Wonderboom 4 | Skullcandy Terrain | |
|---|---|---|
| Price | $64.99 | $49.93 |
| Ranked | #109 of 179 in Medium Size Portable Bluetooth Speakers | #169 of 179 in Medium Size Portable Bluetooth Speakers |
| Battery Life | 14 hours (Manufacturer specified) | 14 hours (Manufacturer specified) |
| Maximum SPL | 87dB (Manufacturer specified) | 90dB SPL (Manufacturer specified) |
| Power Input | USB-C | USB-C |
| Stereo | No | No |
| Omnidirectional | Yes | No |
| Weight | 0.9 lbs (420 g) | 1 lbs (458 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) | 6.3” x 3.1” x 3.1” (160 x 79 x 79 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 | No |
| 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 6W |
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