Short answer: the Bogasing G4. It ranks #27 of 177 medium speakers by sound quality, rated 4.0/5, at $42.49; the Sony ULT Field 1 ranks #99, rated 3.1/5, and costs $108, so there is not much of a tradeoff to weigh.
The Sony ULT Field 1 is the lighter pick. A tough, waterproof small speaker that survives drops, with long real world battery life and stereo pairing. At 1.4 lbs (650 g) it weighs noticeably less than the Bogasing G4 at 1.8 lbs (830 g). It supports AAC Bluetooth, which the Bogasing G4 lacks. It links with other speakers (Party Connect up to 100 speakers), which the Bogasing G4 cannot. The catch: Upper midrange peak, rolled off treble.
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 12 for the Sony ULT Field 1. It keeps a wired aux input, which the Sony ULT Field 1 lacks. It plays in stereo from a single unit, unlike the Sony ULT Field 1. 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.
Buy the Bogasing G4. It is rated higher for sound quality than the Sony ULT Field 1 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.
A tough, waterproof small speaker that survives drops, with long real world battery life and stereo pairing.
A light, affordable waterproof speaker with surprisingly strong bass for its size, solid loudness, long battery life and stereo pairing.
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Specifications Side By Side
| Sony ULT Field 1 | Bogasing G4 | |
|---|---|---|
| Price | $108.00 | $42.49 |
| Ranked | #99 of 177 in Medium Size Portable Bluetooth Speakers | #27 of 177 in Medium Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | No | Yes |
| Battery Life | 12 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Built-in Microphone | Yes | - |
| EQ | Yes | No |
| IP Rating | IP67 | IPX7 |
| Party Mode | Yes (Party Connect up to 100 speakers) | No |
| Power Bank | No | - |
| Power Input | USB-C | USB-C |
| Stereo | No | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 1.4 lbs (650 g) | 1.8 lbs (0.83 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | AAC, SBC | LE Audio with LC3 |
| Bluetooth Version | 5.3 | 5.3 |
| Dimensions | 8.1” x 3” x 3” (206 x 77 x 76 mm) | 8.9”H x 2.5”W x 3.4”D (225 x 64 x 86 mm) |
| Drivers | 83mm x 42mm woofer, 16mm tweeter + passive radiator | Two drivers and passive radiators |
| Digital Aux Input | No | No |
| Strap | Yes (detachable strap) | - |
| Aux Latency | - | 16ms |
| Bass Extension (-10dB) | - | 56Hz |
| Bluetooth Latency | - | 90ms |
| Maximum SPL | - | 100dB (measured by Alan Ross Reviews) |
| MicroSD Playback | - | Yes |
| Amplifier Power | - | 50W |
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