Short answer: the Bogasing G4. It ranks #27 of 179 medium speakers by sound quality (rated 4.0/5) at $42.49 and is still sold new; the Ultimate Ears Roll 2 ranks #164 (rated 2.2/5) and is discontinued, so it is only an option used. The Ultimate Ears Roll 2’s replacement, the Ultimate Ears Miniroll, is still sold new.
The Bogasing G4 is the better-sounding, longer-running choice. A light, affordable waterproof speaker with surprisingly strong bass for its size, solid loudness, long battery life and stereo pairing. It is rated for 24 hours of battery against 9 for the Ultimate Ears Roll 2. It plays in stereo from a single unit, unlike the Ultimate Ears Roll 2. It charges over USB-C rather than Micro USB. Watch for: The upper treble is boosted and uneven, while the mids sit slightly behind the bass and highs, so it is not a neutral choice for vocal-focused music.
The Ultimate Ears Roll 2 is the lighter choice. A thin, flat waterproof speaker with a bungee cord for hanging from a hook or door handle, now discontinued. At 0.7 lbs (330 g) it weighs much less than the Bogasing G4 at 1.8 lbs (830 g). It has an adjustable EQ, which the Bogasing G4 lacks. The catch: Barely any bass, rolled off treble off axis.
Buy the Bogasing G4. It is rated higher for sound quality, and the Ultimate Ears Roll 2 is discontinued, so it is only available used.
Looking for alternatives? See the complete Portable Bluetooth rankings.
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.
As an eBay Partner, we may be compensated if you make a purchase.
Specifications Side By Side
| Bogasing G4 | Ultimate Ears Roll 2 | |
|---|---|---|
| Price | $42.49 | $100 Discontinued |
| Ranked | #27 of 179 in Medium Size Portable Bluetooth Speakers | #164 of 179 in Medium Size Portable Bluetooth Speakers |
| App | No | Yes (UE Roll app) |
| Aux Input | Yes | Yes |
| Aux Latency | 16ms | - |
| Bass Extension (-10dB) | 56Hz | - |
| Battery Life | 24 hours (Manufacturer specified) | 9 hours (Manufacturer specified) |
| EQ | No | Yes (5-band via UE ROLL app) |
| IP Rating | IPX7 | IPX7 |
| Bluetooth Latency | 90ms | - |
| Maximum SPL | 100dB (measured by Alan Ross Reviews) | - |
| MicroSD Playback | Yes | - |
| Party Mode | No | - |
| Power Input | USB-C | Micro USB |
| Stereo | Yes | No |
| Omnidirectional | No | No |
| TWS | Yes | No |
| Weight | 1.8 lbs (0.83 kg) | 0.7 lbs (330 g) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | LE Audio with LC3 | SBC (inferred; additional codecs unverified) |
| Amplifier Power | 50W | 10W |
| Drivers | Two drivers and passive radiators | 1x 2” full-range + 2x 0.75” tweeters |
| Bluetooth Version | 5.3 | 4.0 |
| Digital Aux Input | No | No |
| Dimensions | 8.9”H x 2.5”W x 3.4”D (225 x 64 x 86 mm) | 5.9” x 5.3” x 1.6” (149.5 x 135 x 40 mm) |
| Built-in Microphone | - | No |
Related Speaker Comparisons
How Bogasing G4 compares with other leading options: