Short answer: the Bogasing G4. It ranks #25 of 144 medium speakers by sound quality, rated 4.0/5, at $38.29; the Ultimate Ears Roll 2 ranks #130, rated 2.2/5, and costs $100, which makes this an easy call rather than a real tradeoff.
What the Bogasing G4 does well: A 0.83kg travel-friendly speaker with 50W output, IPX7 protection, USB-C charging, aux and microSD playback, LC3 Bluetooth and TWS pairing. 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 case for the Ultimate Ears Roll 2: Thin, flat profile fits easily in a bag or purse; light at 0.73 lb. The tradeoff: Not stereo.
Worth knowing: the Ultimate Ears Roll 2 has been discontinued and is hard to find new at this point.
Buy the Bogasing G4. It is rated higher for sound quality than the Ultimate Ears Roll 2 and costs less, so only choose the other one for a particular feature it does better.
Battery life favors the Bogasing G4: rated for 24 hours against 9 hours for the Ultimate Ears Roll 2.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Bogasing G4 | Ultimate Ears Roll 2 | |
|---|---|---|
| Price | $38.29 | $100 Discontinued |
| Ranked | #25 of 144 in Medium Size Portable Bluetooth Speakers | #130 of 144 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 Codecs | LE Audio with LC3 | SBC (inferred; additional codecs unverified) |
| Amplifier Power | 50W | - |
| 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 |
| Discontinued | - | Yes |
Related Speaker Comparisons
How Bogasing G4 compares with other leading options:
- Bogasing G4 vs Earfun Uboom L
- Bogasing G4 vs Soundcore Motion 300
- Bogasing G4 vs Soundcore Motion+
- Bogasing G4 vs Minirig 4
- B&O Beosound A1 2nd gen vs Bogasing G4
Prices on this page were last checked September 26, 2026 at 11:14 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
Bogasing G4: $38.29 Amazon eBay
Pros: A 0.83kg travel-friendly speaker with 50W output, IPX7 protection, USB-C charging, aux and microSD playback, LC3 Bluetooth and TWS pairing. It reaches a useful 100dB maximum level and has a measured 56Hz -10dB bass point, giving it more low-end presence than many speakers of this size. Measured bass extension of 56Hz (-10dB).
Cons: 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. It has no app or user EQ, and its Super Bass and Vocal modes offer little practical differentiation according to listening tests.
Full Bogasing G4 review and specifications →
| Amplifier Power | 50W |
|---|---|
| App | No |
| Aux Input | Yes |
| Aux Latency | 16ms |
| Bass Extension (-10dB) | 56Hz |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | LE Audio with LC3 |
| Bluetooth Latency | 90ms |
| Bluetooth Version | 5.3 |
| Digital Aux Input | No |
| Dimensions | 8.9”H x 2.5”W x 3.4”D (225 x 64 x 86 mm) |
| Drivers | Two drivers and passive radiators |
| EQ | No |
| IP Rating | IPX7 |
| Maximum SPL | 100dB (measured by Alan Ross Reviews) |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Party Mode | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 1.8 lbs (0.83 kg) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Ultimate Ears Roll 2: $100 Discontinued eBay
Newer model: the Ultimate Ears Miniroll, rated 3.9/5.
Pros: Thin, flat profile fits easily in a bag or purse; light at 0.73 lb. Built-in bungee cord for hanging from a hook, nail, or door handle. Life-resistant waterproof/dustproof shell.
Cons: Not stereo. Barely any bass, rolled off treble off axis. Discontinued.
Full Ultimate Ears Roll 2 review and specifications →
| App | Yes (UE Roll app) |
|---|---|
| Aux Input | Yes |
| Battery Life | 9 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 4.0 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 5.9” x 5.3” x 1.6” (149.5 x 135 x 40 mm) |
| Discontinued | Yes |
| Drivers | 1x 2” full-range + 2x 0.75” tweeters |
| EQ | Yes (5-band via UE ROLL app) |
| IP Rating | IPX7 |
| Omnidirectional | No |
| Power Input | Micro USB |
| Stereo | No |
| TWS | No |
| Weight | 0.7 lbs (330 g) |
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
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