Short answer: the W-King X20S. Both are rated 3.8/5 for sound quality (#30 and #29 of 113 boombox speakers), and the W-King X20S costs $150.99 against $159.99 for the Ruimatech RM-10, and with sound quality even, the cheaper one is the better buy.
Side by side the Ruimatech RM-10 takes sound quality a notch further, with a hi-fi leaning clarity, great highs that stay smooth at max volume and bass that holds on at full volume. It is a larger speaker, just into the large boombox size.
The W-King X20S is slimmer, much lighter and easier to carry, and it still hangs with bigger speakers. It adds a shoulder strap and an app with customizable EQ, neither of which the RM-10 has, plus FM radio, SD and USB playback.
Pick the RM-10 if the best sound per dollar matters most. Pick the X20S if you carry it around a lot or want to tune the EQ.
Buy the W-King X20S. Both are rated the same for sound quality, and it costs $9 less than the Ruimatech RM-10.
If battery life is a priority, the W-King X20S is rated for 24 hours versus 14 hours for the Ruimatech RM-10.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Prices on this page were last checked November 11, 2026 at 3:26 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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Specifications Side By Side
| Ruimatech RM-10 | W-King X20S | |
|---|---|---|
| Price | $159.99 | $150.99 |
| Ranked | #29 of 113 in Boombox Size Portable Bluetooth Speakers | #30 of 113 in Boombox Size Portable Bluetooth Speakers |
| Amplifier Power | 140W RMS (300W peak) | 140W RMS (180W peak) |
| Drivers | 80W woofer + 2x 20W midranges + 2x 10W tweeters + 2 passive radiators | 1x 6.5” subwoofer, 2x 1.1” tweeters, 2x passive radiator |
| IP Rating | IPX6 | IPX7 |
| Battery Life | 14 hours at 30% volume (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Power Bank | Yes (USB-C) | - |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.3 | 5.4 |
| TWS | Yes | Yes |
| App | No | Yes (W-KING) |
| Stereo | Partially | Partially |
| Omnidirectional | No | No |
| Strap | No | Yes (detachable shoulder strap) |
| Dimensions | - | 7.6”H x 17.4”W x 9.4”D (192 x 442 x 240 mm) |
| EQ | - | Yes |
| Power Input | - | USB-C |
| Built-in Microphone | - | Yes |
| Aux Input | - | Yes |
| USB Playback | - | Yes |
| MicroSD Playback | - | Yes |
| FM Tuner | - | Yes |
| Weight | - | 13.8 lbs (6.25 kg) |
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