Short answer: the Ultimate Ears Wonderboom 4 is the better inexpensive outdoor speaker, while the Bose SoundLink Color II only makes sense for particular used-market features, though neither ranks well in its class. The Wonderboom ranks #106 of 164 medium speakers at $78.95, compared with the Bose at #121 for $139, a $60.05 difference. Both are rated below 3.0/5 among the 164 medium speakers, so if sound quality matters, consider the Earfun Uboom L instead, ranked #2 at $49.79.
Wonderboom 4 is much better suited to bags, beaches, and accidental drops in water. It weighs 0.9 lbs (420 g), has an IP67 rating, charges over USB-C, lasts a rated 14 hours, and plays sound in all directions. It has no app or Party Mode and its bass is shallow and somewhat thuddy, but it remains a capable small, current speaker for the price.
The Bose is larger and carries features the Wonderboom lacks. Its stereo drivers, built-in microphone, multipoint pairing, Bose Party mode, and soft rubber coating are still appealing. However, it is discontinued, only IPX4 splash resistant, uses Micro USB, lasts a rated eight hours, and its boosted bass, limited midrange detail, and rolled-off treble limit its appeal.
Buy the Ultimate Ears Wonderboom 4 for lower cost, lighter carry weight, IP67 waterproofing, USB-C charging, and the stronger sound-quality ranking.
Buy the Bose SoundLink Color II only if its stereo playback, multipoint pairing, or speakerphone function is worth choosing discontinued hardware.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Bose SoundLink Color II | Ultimate Ears Wonderboom 4 | |
|---|---|---|
| Price | $139.00 Discontinued | $78.95 |
| Ranked | #121 of 164 in Medium Size Portable Bluetooth Speakers | #106 of 164 in Medium Size Portable Bluetooth Speakers |
| Battery Life | 8 hours (Manufacturer specified) | 14 hours (Manufacturer specified) |
| Party Mode | Yes (Bose Party mode) | No |
| TWS | Yes | Yes |
| Weight | 1.3 lbs (600 g) | 0.9 lbs (420 g) |
| IP Rating | IPX4 | IP67 |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 4.2 | 5.2 |
| Dimensions | 5.2” x 5” x 2.2” (132 x 127 x 56 mm) | 4.1” x 3.8” (104 x 95.3 mm) |
| Drivers | 2x 40mm full-range drivers | 2x 40mm active drivers + 2x passive radiators (46.1 x 65.2mm) |
| App | Yes (Bose Connect) | No |
| EQ | No | No |
| Built-in Microphone | Yes | No |
| Stereo | Yes | No |
| Omnidirectional | No | Yes |
| Power Input | Micro USB | USB-C |
| Power Bank | No | No |
| Aux Input | No | No |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC, AAC | SBC |
| Maximum SPL | - | 87dB (Manufacturer specified) |
| Strap | - | Yes (built-in loop) |
Related Speaker Comparisons
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- 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 October 4, 2026 at 9:58 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
Bose SoundLink Color II: $139.00 Discontinued Amazon eBay
Pros: Soft-touch rubber coating is comfortable to hold and tough enough for bumps and scrapes. IPX4 splashproof. Supports multipoint pairing to two devices at once.
Cons: Boosted bass on Color II. Not as deep of bass as other models. Lacking midrange detail. Rolled off treble. Discontinued.
Full Bose SoundLink Color II review and specifications →
| App | Yes (Bose Connect) |
|---|---|
| Aux Input | No |
| Battery Life | 8 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC |
| Bluetooth Version | 4.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 5.2” x 5” x 2.2” (132 x 127 x 56 mm) |
| Drivers | 2x 40mm full-range drivers |
| EQ | No |
| IP Rating | IPX4 |
| Omnidirectional | No |
| Party Mode | Yes (Bose Party mode) |
| Power Bank | No |
| Power Input | Micro USB |
| Stereo | Yes |
| TWS | Yes |
| Weight | 1.3 lbs (600 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Bose SoundLink Color II vs Marshall Emberton III
- Bose SoundLink Color II vs Marshall Emberton II
- Bose SoundLink Color II vs Yamaha True X Speaker 1A
- Bose SoundLink Color II vs Cabasse Swell
- Bose SoundLink Color II vs Sony SRS-XB20
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Ultimate Ears Wonderboom 4: $78.95 Amazon eBay
Older models: the Ultimate Ears Wonderboom 3 (ranked lower, rated 2.9/5), the Ultimate Ears Wonderboom 2 (ranked lower, rated 2.9/5) and the Ultimate Ears Wonderboom (ranked lower, rated 2.9/5).
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 |
| Battery Life | 14 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| 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 |
| Strap | Yes (built-in loop) |
| 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
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- Ultimate Ears Wonderboom 4 vs Ultimate Ears Wonderboom
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- See all 138 comparisons