Short answer: the Onn Portable FM Boombox. It ranks #26 of 115 large speakers by sound quality, rated 4.2/5, at $74.83; the W-King D8 ranks #58, rated 3.5/5, and costs $79.99, which makes this an easy call rather than a real tradeoff.
The Onn Portable FM Boombox is the better-sounding choice. An excellent value waterproof boombox that floats, with reasonably deep bass, FM radio, lights and a long battery. It links with other speakers (Party Sync, pairs with 1 other onn. speaker), which the W-King D8 cannot. The catch: Reasonable frequency response, but not quite as smooth as some of the top-ranked speakers in this size.
The W-King D8 is the longer-running option. An affordable stereo boombox with four drivers, waterproofing, and a long battery for backyard and beach playlists. It is rated for 24 hours of battery against 16 for the Onn Portable FM Boombox.
Buy the Onn Portable FM Boombox. It is rated higher for sound quality than the W-King D8 and costs less, which makes it the one to get unless you need something the other one does better.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
An excellent value waterproof boombox that floats, with reasonably deep bass, FM radio, lights and a long battery.
An affordable stereo boombox with four drivers, waterproofing, and a long battery for backyard and beach playlists.
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
| Onn Portable FM Boombox | W-King D8 | |
|---|---|---|
| Price | $74.83 | $79.99 |
| Ranked | #26 of 115 in Large Size Portable Bluetooth Speakers | #58 of 115 in Large Size Portable Bluetooth Speakers |
| Battery Life | 16 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| IP Rating | IPX7 | IPX7 |
| Amplifier Power | 25W RMS (100W peak) | 90W max / 50W RMS |
| FM Tuner | Yes (10 presets) | - |
| Built-in Microphone | Yes | Yes |
| Power Bank | Yes (USB-A) | Yes (USB-A) |
| Power Input | USB-C | USB-C |
| Weight | 4.9 lbs (2.22 kg) | 5.4 lbs (2.43 kg) |
| Dimensions | 13.8” x 5.9” x 7.7” (350 x 149 x 195 mm) | 12.6” x 4.8” x 4.7” (320 x 121.9 x 119.4 mm) |
| Drivers | 2 speakers | 2x 70mm woofers + 2x 31mm tweeters + passive radiators |
| TWS | Yes | No |
| Party Mode | Yes (Party Sync, pairs with 1 other onn. speaker) | No |
| App | No | No |
| EQ | No | No |
| Aux Input | Yes | Yes |
| Digital Aux Input | No | No |
| Removable Battery | No | - |
| Omnidirectional | No | No |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) | SBC |
| Lights | Yes | - |
| Stereo | Yes | Yes |
| Bass Extension (-10dB) | - | 49Hz |
| Maximum SPL | - | 101dB (measured by Alan Ross Reviews) |
| MicroSD Playback | - | Yes |
| Bluetooth Version | - | 5.0 |
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