Short answer: the Ultimate Ears Wonderboom for better sound quality, the Zealot S61 for the lower price. The Ultimate Ears Wonderboom ranks #87 of 136 medium speakers at $79. The Zealot S61 ranks #134 at $20, $59 cheaper.
What the Ultimate Ears Wonderboom offers: IP67 rated and floats. Compact, light, and simple to use. Watch for: Not stereo, barely any bass, recessed treble. Dip at 9khz. Low mid bass distortion. Not technically a 360 speaker, only front and rear.
What the Zealot S61 offers: 20W output, IPX7 waterproof, exceptional 40-hour battery life, Bluetooth 5.2, TWS stereo pairing, compact 665g design, single full-range driver, built-in microphone, AUX input, USB-C charging Watch for: Sounds like a soup can, no bass at all. Weird frequency response all over.
Buy the Ultimate Ears Wonderboom if sound quality is the priority over the price, or the Zealot S61 if the price is the priority over sound quality.
Skip the Zealot S61 if sound quality matters to you. It ranks near the bottom of the 136 medium speakers.
There is a real battery-life gap here: the Zealot S61 is rated for 40 hours, the Ultimate Ears Wonderboom only 10 hours.
Specifications Side By Side
| Ultimate Ears Wonderboom | Zealot S61 | |
|---|---|---|
| Price | $79 Discontinued | $20 |
| Ranked | #87 of 136 in Medium Size Portable Bluetooth Speakers | #134 of 136 in Medium Size Portable Bluetooth Speakers |
| Battery Life | 10 hours (Manufacturer specified) | 40 hours (Manufacturer specified) |
| Power Input | Micro USB | USB-C |
| Stereo | No | - |
| Omnidirectional | Yes | No |
| Weight | 0.9 lbs / 425 g | 1.5 lbs / 665 g |
| IP Rating | IPX7 | IPX7 |
| Drivers | 2x 1.6" active drivers + 2x 1.8" x 2.6" passive radiators | 66mm full-range |
| TWS | Yes | Yes |
| Party Mode | No | - |
| App | No | - |
| EQ | No | - |
| Built in Microphone | No | Yes |
| Discontinued | Yes | - |
| Digital Aux Input | No | No |
| Bluetooth Version | - | 5.2 |
| Dimensions | - | 4.1" x 4.1" x 6.7" (103 x 103 x 170 mm) |
| Aux Input | - | Yes |
| Output Power | - | 20W |
| Power Bank | - | No |
Related Speaker Comparisons
Other pairings from the same speaker class worth checking:
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- Ultimate Ears Wonderboom 2 vs Tribit Stormbox Mini
- Tribit Xsound Surf vs Ultimate Ears Wonderboom 2
- Doss Soundbox vs Zealot S61
- Soundcore Motion 300 vs Zealot S61
Prices on this page were last checked August 27, 2026 at 10:09 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
Ultimate Ears Wonderboom: $79 Discontinued eBay
Pros: IP67 rated and floats. Compact, light, and simple to use.
Cons: Not stereo, barely any bass, recessed treble. Dip at 9khz. Low mid bass distortion. Not technically a 360 speaker, only front and rear. Discontinued.
Full Ultimate Ears Wonderboom review and specifications →
| App | No |
|---|---|
| Battery Life | 10 hours (Manufacturer specified) |
| Built in Microphone | No |
| Digital Aux Input | No |
| Discontinued | Yes |
| Drivers | 2x 1.6" active drivers + 2x 1.8" x 2.6" passive radiators |
| EQ | No |
| IP Rating | IPX7 |
| Omnidirectional | Yes |
| Party Mode | No |
| Power Input | Micro USB |
| Stereo | No |
| TWS | Yes |
| Weight | 0.9 lbs / 425 g |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Ultimate Ears Wonderboom vs Ultimate Ears Wonderboom 2
- Ultimate Ears Wonderboom vs Ultimate Ears Boom 4
- Ultimate Ears Wonderboom vs Ultimate Ears Wonderboom 3
- Ultimate Ears Wonderboom vs Ultimate Ears Boom 3
- Ultimate Ears Wonderboom vs Klipsch Groove/Heritage Groove
- Ultimate Ears Wonderboom vs Ultimate Ears Wonderboom 4
- Ultimate Ears Wonderboom vs Ultimate Ears Megaboom 3
- Ultimate Ears Wonderboom vs LG Xboom Grab
- See all 74 comparisons
Zealot S61: $20 Amazon Aliexpress eBay
Pros: 20W output, IPX7 waterproof, exceptional 40-hour battery life, Bluetooth 5.2, TWS stereo pairing, compact 665g design, single full-range driver, built-in microphone, AUX input, USB-C charging
Cons: Sounds like a soup can, no bass at all. Weird frequency response all over.
Full Zealot S61 review and specifications →
| Aux Input | Yes |
|---|---|
| Battery Life | 40 hours (Manufacturer specified) |
| Bluetooth Version | 5.2 |
| Built in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 4.1" x 4.1" x 6.7" (103 x 103 x 170 mm) |
| Drivers | 66mm full-range |
| IP Rating | IPX7 |
| Omnidirectional | No |
| Output Power | 20W |
| Power Bank | No |
| Power Input | USB-C |
| TWS | Yes |
| Weight | 1.5 lbs / 665 g |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons