Short answer: the Ruimatech RM-10. It ranks #29 of 113 boombox speakers by sound quality, rated 3.8/5, at $159.99; the EcoXGear Defender ranks #85, rated 2.5/5, and costs $299.99, so there is little reason to consider the other one.
The Ruimatech RM-10 is the better-sounding option. An affordable three-way boombox with clear sound that holds up at full volume, water resistance and fast charging. The catch: It is tuned bass boosted, much like the JBL Boombox 3.
The EcoXGear Defender is the longer-running pick. A rugged, floating waterproof speaker that gets very loud for its size, with a flashlight, bottle opener and power bank. It is rated for 25 hours of battery against 14 for the Ruimatech RM-10. The tradeoff: Its single front-facing driver layout has narrow dispersion: clarity and detail drop noticeably when you move off-axis, and the soundstage is limited.
Buy the Ruimatech RM-10. It is rated higher for sound quality than the EcoXGear Defender and costs less, which makes it the one to get unless you need something the other one does better.
Want more options? Browse the full Portable Bluetooth rankings.
Prices on this page were last checked November 14, 2026 at 6:17 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
| Ruimatech RM-10 | EcoXGear Defender | |
|---|---|---|
| Price | $159.99 | $299.99 |
| Ranked | #29 of 113 in Boombox Size Portable Bluetooth Speakers | #85 of 113 in Boombox Size Portable Bluetooth Speakers |
| Amplifier Power | 140W RMS (300W peak) | 100W |
| Drivers | 80W woofer + 2x 20W midranges + 2x 10W tweeters + 2 passive radiators | 52mm full-range driver |
| IP Rating | IPX6 | IP67 |
| Battery Life | 14 hours at 30% volume (Manufacturer specified) | 25 hours (Manufacturer specified) |
| Power Bank | Yes (USB-C) | Yes (USB-C, 5V/2.1A) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.3 | 5.1 |
| TWS | Yes | Yes |
| App | No | No |
| Stereo | Partially | No |
| Omnidirectional | No | No |
| Strap | No | No |
| Bluetooth Codecs | - | SBC |
| EQ | - | Yes |
| Party Mode | - | No |
| USB Playback | - | No |
| Built-in Microphone | - | Yes |
| Power Input | - | USB-C |
| FM Tuner | - | No |
| Weight | - | 10 lbs (4.54 kg) |
| Aux Input | - | Yes |
| Dimensions | - | 6.7” x 15.4” x 9.6” (170.2 x 391.2 x 243.8 mm) |
| Digital Aux Input | - | No |
Where the Ratings Come From
- Ruimatech RM-10: reviews by Jagist and Josh’s Gadgets and More.
- EcoXGear Defender: reviews by Outeraudio and Everyday Man.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
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