Short answer: the Sony ULT Field 1. It ranks #97 of 164 medium speakers by sound quality (rated 3.1/5) at $138 and is still sold new; the EFM Toledo ranks #152 (rated 2.2/5) and is discontinued, so it is only an option used.
The Sony ULT Field 1 is the better-sounding option. IP67 rated, survives drops and 1m submersion. It charges over USB-C rather than Micro USB. The tradeoff: Upper midrange peak, rolled off treble.
The EFM Toledo is the lighter choice. A compact 1.1 lbs (500 g) speaker with dual drivers, IPX6 protection, speakerphone capability, TWS pairing and a claimed 15-hour battery life. At 1.1 lbs (500 g) it weighs noticeably less than the Sony ULT Field 1 at 1.4 lbs (650 g). The catch: With only 10W output, bass is very limited and treble rolls off early, so music lacks the weight, detail and headroom of stronger portable speakers.
Buy the Sony ULT Field 1. It is rated higher for sound quality and still sold new, while the EFM Toledo is discontinued.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Sony ULT Field 1 | EFM Toledo | |
|---|---|---|
| Price | $138.00 | $99 Discontinued |
| Ranked | #97 of 164 in Medium Size Portable Bluetooth Speakers | #152 of 164 in Medium Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | No | No |
| Battery Life | 12 hours (Manufacturer specified) | 15 hours (Manufacturer specified) |
| Built-in Microphone | Yes | Yes |
| EQ | Yes | - |
| IP Rating | IP67 | IPX6 |
| Party Mode | Yes (Party Connect up to 100 speakers) | - |
| Power Bank | No | No |
| Power Input | USB-C | Micro USB |
| Stereo | No | No |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 1.4 lbs (650 g) | 1.1 lbs (0.5 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | AAC, SBC | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 5.3 | - |
| Dimensions | 8.1” x 3” x 3” (206 x 77 x 76 mm) | 3.9” x 3.9” x 9.1” (100 x 100 x 230 mm) |
| Drivers | 83mm x 42mm woofer, 16mm tweeter + passive radiator | 2x drivers |
| Digital Aux Input | No | No |
| Strap | Yes (detachable strap) | - |
| Amplifier Power | - | 10W |
Related Speaker Comparisons
More top alternatives to Sony ULT Field 1:
- Sony ULT Field 1 vs Earfun Uboom L
- Sony ULT Field 1 vs Soundcore Motion 300
- Soundcore Motion+ vs Sony ULT Field 1
- Soundcore Boost “upgraded” 2021 vs Sony ULT Field 1
- Sony ULT Field 1 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.
As an eBay Partner, we may be compensated if you make a purchase.
The Two Speakers In Full
Sony ULT Field 1: $138.00 Amazon eBay
Older models: the Sony XB23 (ranked higher, rated 3.3/5) and the Sony SRS-XB20 (ranked lower, rated 2.8/5).
Larger models: the Sony ULT Field 7 (rated 3.2/5) and the Sony ULT Tower 10 (rated 3.9/5).
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 | Yes |
| 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 |
| Strap | Yes (detachable strap) |
| TWS | Yes |
| Weight | 1.4 lbs (650 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Sony ULT Field 1 vs JBL Grip
- Sony ULT Field 1 vs Treblab HD77
- Sony ULT Field 1 vs Tribit Xsound Go
- Sony ULT Field 1 vs Tronsmart Mirtune S100
- Sony ULT Field 1 vs KEF Muo gen2
- Sony ULT Field 1 vs Tronsmart Mirtune C3
- Sony ULT Field 1 vs Tribit Xsound Surf
- Sony ULT Field 1 vs Sonos Roam
- See all 140 comparisons
EFM Toledo: $99 Discontinued eBay
Pros: A compact 500g speaker with dual drivers, IPX6 protection, speakerphone capability, TWS pairing and a claimed 15-hour battery life. Its simple, rugged format makes it easy to carry for podcasts, background music and casual use around water.
Cons: With only 10W output, bass is very limited and treble rolls off early, so music lacks the weight, detail and headroom of stronger portable speakers. It has no aux input, app or EQ, and this discontinued model is best considered only if its compact weather-resistant design is the priority.
Full EFM Toledo review and specifications →
| Amplifier Power | 10W |
|---|---|
| App | No |
| Aux Input | No |
| Battery Life | 15 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 3.9” x 3.9” x 9.1” (100 x 100 x 230 mm) |
| Drivers | 2x drivers |
| IP Rating | IPX6 |
| Omnidirectional | No |
| Power Bank | No |
| Power Input | Micro USB |
| Stereo | No |
| TWS | Yes |
| Weight | 1.1 lbs (0.5 kg) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons