Short answer: the Sony ULT Field 1. It ranks #79 of 142 medium speakers by sound quality at $98; the B&O Beosound Explore ranks #112 and costs $299, so there is not much of a tradeoff to weigh.
What the Sony ULT Field 1 offers: IP67 rated, survives drops and 1m submersion. Real-world battery around 28+ hours with ULT (bass boost) mode off. Stereo-pairs with a second ULT Field 1. Watch for: Upper midrange peak, rolled off treble
What the B&O Beosound Explore offers: IP67 rated with a rugged ‘seatbelt’ strap and carabiner hook. Real-world battery life around 20-24 hours. Distinctive anodized-aluminum design. Watch for: Huge lack of bass extension compared to competitors, overly hot ringing treble. Colored midrange. Just not great sounding overall.
Buy the Sony ULT Field 1. It ranks higher for sound quality than the B&O Beosound Explore and costs less, so the other one has nothing left to offer.
If sound quality matters at all to you, skip the B&O Beosound Explore. It ranks near the bottom of the 142 medium speakers, so look higher up the list instead.
If battery life is a priority, the B&O Beosound Explore is rated for 27 hours versus 12 hours for the Sony ULT Field 1.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Sony ULT Field 1 | B&O Beosound Explore | |
|---|---|---|
| Price | $98.00 | $299.00 |
| Ranked | #79 of 142 in Medium Size Portable Bluetooth Speakers | #112 of 142 in Medium Size Portable Bluetooth Speakers |
| App | Yes | - |
| Aux Input | No | - |
| Battery Life | 12 hours (Manufacturer specified) | 27 hours (Manufacturer specified) |
| Built-in Microphone | Yes | No |
| EQ | Yes | - |
| IP Rating | IP67 | IP67 |
| Party Mode | Yes (Party Connect up to 100 speakers) | - |
| Power Bank | No | No |
| Power Input | USB-C | USB-C |
| Stereo | No | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 1.4 lbs (650 g) | 1.4 lbs (631 g) |
| Bluetooth Codecs | AAC, SBC | SBC |
| Bluetooth Version | 5.3 | 5.2 |
| Dimensions | 8.1" x 3" x 3" (206 x 77 x 76 mm) | 3.2" x 4.9" x 3.2" (81 x 124 x 81 mm) |
| Drivers | 83mm x 42mm woofer, 16mm tweeter + passive radiator | 2x 1.8" (46mm) full-range drivers |
| Digital Aux Input | No | Yes (USB-C) |
| Bass Extension (-10dB) | - | ~70Hz |
| Amplifier Power | - | 60W |
| Maximum SPL | - | 91dB (Manufacturer specified) |
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Prices on this page were last checked September 16, 2026 at 12:41 AM 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
Sony ULT Field 1: $98.00 Amazon eBay
Pros: IP67 rated, survives drops and 1m submersion. Real-world battery around 28+ hours with ULT (bass boost) mode off. Stereo-pairs with a second ULT Field 1.
Cons: Upper midrange peak, rolled off treble
Full Sony ULT Field 1 review and specifications →
| App | Yes |
|---|---|
| Aux Input | No |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth Codecs | AAC, SBC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 8.1" x 3" x 3" (206 x 77 x 76 mm) |
| Drivers | 83mm x 42mm woofer, 16mm tweeter + passive radiator |
| EQ | Yes |
| IP Rating | IP67 |
| Omnidirectional | No |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | No |
| TWS | Yes |
| Weight | 1.4 lbs (650 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
B&O Beosound Explore: $299.00 Amazon eBay
Pros: IP67 rated with a rugged ‘seatbelt’ strap and carabiner hook. Real-world battery life around 20-24 hours. Distinctive anodized-aluminum design. Measured bass extension of ~70Hz (-10dB).
Cons: Huge lack of bass extension compared to competitors, overly hot ringing treble. Colored midrange. Just not great sounding overall.
Full B&O Beosound Explore review and specifications →
| Amplifier Power | 60W |
|---|---|
| Bass Extension (-10dB) | ~70Hz |
| Battery Life | 27 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.2 |
| Built-in Microphone | No |
| Digital Aux Input | Yes (USB-C) |
| Dimensions | 3.2" x 4.9" x 3.2" (81 x 124 x 81 mm) |
| Drivers | 2x 1.8" (46mm) full-range drivers |
| IP Rating | IP67 |
| Maximum SPL | 91dB (Manufacturer specified) |
| Omnidirectional | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 1.4 lbs (631 g) |
- Links
- 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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