Short answer: the Zealot S89. It ranks #19 of 112 boombox speakers by sound quality, rated 4.0/5, at $193.58; the EcoXGear Defender ranks #84, rated 2.5/5, and costs $299.99, which makes this an easy call rather than a real tradeoff.
The EcoXGear Defender is the lighter choice. A rugged, floating waterproof speaker that gets very loud for its size, with a flashlight, bottle opener and power bank. At 10 lbs (4.54 kg) it weighs much less than the Zealot S89 at 16.1 lbs (7.3 kg). Watch for: Its single front-facing driver layout has narrow dispersion: clarity and detail drop noticeably when you move off-axis, and the soundstage is limited.
The Zealot S89 is the better-sounding, longer-running choice. A great value boombox with deep bass, very high volume, a 40 hour battery and water resistance for outdoor parties. It is rated for 40 hours of battery against 25 for the EcoXGear Defender. It links with other speakers (PartyAdd up to 100 speakers), which the EcoXGear Defender cannot. It plays in stereo from a single unit, unlike the EcoXGear Defender. The tradeoff: At high volume, listener reports describe the bass as loose or muddy and the overall balance as less clear than better boombox speakers.
Buy the Zealot S89. It is rated higher for sound quality than the EcoXGear Defender and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Want more options? Browse the full Portable Bluetooth rankings.
A rugged, floating waterproof speaker that gets very loud for its size, with a flashlight, bottle opener and power bank.
A great value boombox with deep bass, very high volume, a 40 hour battery and water resistance for outdoor parties.
Prices on this page were last checked October 31, 2026 at 7:11 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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Specifications Side By Side
| EcoXGear Defender | Zealot S89 | |
|---|---|---|
| Price | $299.99 | $193.58 |
| Ranked | #84 of 112 in Boombox Size Portable Bluetooth Speakers | #19 of 112 in Boombox Size Portable Bluetooth Speakers |
| Battery Life | 25 hours (Manufacturer specified) | 40 hours (Manufacturer specified) |
| Stereo | No | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| App | No | No |
| EQ | Yes | Yes (multiple modes) |
| Party Mode | No | Yes (PartyAdd up to 100 speakers) |
| Power Bank | Yes (USB-C, 5V/2.1A) | Yes (USB-A + USB-C) |
| USB Playback | No | Yes |
| Built-in Microphone | Yes | No |
| Power Input | USB-C | USB-C |
| FM Tuner | No | - |
| IP Rating | IP67 | IPX6 |
| Weight | 10 lbs (4.54 kg) | 16.1 lbs (7.3 kg) |
| Bluetooth Version | 5.1 | 5.3 |
| Amplifier Power | 100W | 250W |
| Aux Input | Yes | Yes |
| Dimensions | 6.7” x 15.4” x 9.6” (170.2 x 391.2 x 243.8 mm) | 21.2” x 10.4” x 9.4” (538 x 265 x 240 mm) |
| Drivers | 52mm full-range driver | 130W subwoofer + 2x 40mm drivers + 2x tweeters |
| Digital Aux Input | No | No |
| Strap | No | No |
| Bass Extension (-10dB) | - | 36Hz |
| MicroSD Playback | - | Yes |
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