Short answer: the Marshall Willen II if sound quality matters most, the Onn Small Rugged Speaker if price matters most. The Marshall Willen II ranks #11 of 62 small speakers, rated 4.0/5, at $89.99. The Onn Small Rugged Speaker ranks #35, rated 3.1/5, at $14.88, $75.11 cheaper.
The Marshall Willen II is the better-sounding, longer-running pick. A tiny waterproof strap on speaker with balanced sound, a long battery, and app EQ that clips easily onto a bag. It is rated for 17 hours of battery against 10 for the Onn Small Rugged Speaker. It has an adjustable EQ, which the Onn Small Rugged Speaker lacks. Watch for: Not that deep of bass.
The Onn Small Rugged Speaker is the lighter option. A very cheap, tough waterproof mini speaker with USB-C charging, an aux input, and a speakerphone mic. At 0.6 lbs (286 g) it weighs noticeably less than the Marshall Willen II at 0.8 lbs (360 g). It keeps a wired aux input, which the Marshall Willen II lacks. It links with other speakers (Party Sync Mode), which the Marshall Willen II cannot. The catch: Its 1.5-inch driver cannot create meaningful deep bass (about 66Hz at -10dB) or the clarity and scale of better small speakers.
Buy the Marshall Willen II if sound quality matters more than the price. Buy the Onn Small Rugged Speaker if the price matters more than sound quality.
Want more options? Browse the full Portable Bluetooth rankings.
A tiny waterproof strap on speaker with balanced sound, a long battery, and app EQ that clips easily onto a bag.
A very cheap, tough waterproof mini speaker with USB-C charging, an aux input, and a speakerphone mic.
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
| Marshall Willen II | Onn Small Rugged Speaker | |
|---|---|---|
| Price | $89.99 | $14.88 |
| Ranked | #11 of 62 in Small Size Portable Bluetooth Speakers | #35 of 62 in Small Size Portable Bluetooth Speakers |
| App | Yes | No |
| Bass Extension (-10dB) | 70Hz | 66Hz |
| Battery Life | 17 hours (Manufacturer specified) | 10 hours (Manufacturer specified) |
| Built-in Microphone | Yes | Yes |
| EQ | Yes | No |
| IP Rating | IP67 | IPX7 |
| Party Mode | No | Yes (Party Sync Mode) |
| Power Bank | No | No |
| Power Input | USB-C | USB-C |
| Stereo | No | No |
| Omnidirectional | Pointing up | Pointing up |
| TWS | No | No |
| Weight | 0.8 lbs (360 g) | 0.6 lbs (286 g) |
| Aux Input | No | Yes |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Bluetooth Version | 5.3 | - |
| Frequency Response | 75Hz - 20kHz (Manufacturer specified) | - |
| Charging Time | 2.5 hours | - |
| Drivers | 2” (51mm) full-range with dual passive radiators | 1.5” (38mm) full-range driver |
| Dimensions | 3.9” x 1.7” x 3.9” (99 x 43 x 99 mm) | 4.7” x 2.3” x 2.6” (119.9 x 57.9 x 65 mm) |
| Amplifier Power | 10W | 3-5W |
| Digital Aux Input | No | No |
| Strap | Yes (built-in strap) | - |
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