Short answer: the Teufel Rockster Cross. It ranks #23 of 115 large speakers by sound quality, rated 4.2/5, at $199.99. The Zealot S67 ranks #113, rated 2.0/5, at $70.94, $129.05 cheaper, not enough of a saving to outweigh the sound-quality gap.
What the Zealot S67 does well: A budget waterproof speaker with a long rated battery, USB-C charging, microSD playback, and stereo pairing. The tradeoff: Sound quality is the catch.
The Teufel Rockster Cross is the better-sounding pick. A splash resistant speaker with fairly neutral, vocal focused sound and punchy, controlled bass that suits rock and jazz. It supports aptX Bluetooth, which the Zealot S67 lacks. The catch: Outdoor mode can sound somewhat harsh due to the 4kHz peak.
Buy the Teufel Rockster Cross. It is rated higher for sound quality, and the $129.05 you would save on the Zealot S67 does not close the gap.
Looking for alternatives? See the complete Portable Bluetooth rankings.
A budget waterproof speaker with a long rated battery, USB-C charging, microSD playback, and stereo pairing.
A splash resistant speaker with fairly neutral, vocal focused sound and punchy, controlled bass that suits rock and jazz.
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
| Zealot S67 | Teufel Rockster Cross | |
|---|---|---|
| Price | $70.94 | $199.99 |
| Ranked | #113 of 115 in Large Size Portable Bluetooth Speakers | #23 of 115 in Large Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Battery Life | 20 hours (Manufacturer specified) | 16 hours (Manufacturer specified) |
| IP Rating | IPX6 | IPX5 |
| MicroSD Playback | Yes | - |
| Weight | 5.3 lbs (2.4 kg) | 5.3 lbs (2.4 kg) |
| App | No | No |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC, aptX |
| Built-in Microphone | Yes | Yes |
| EQ | No | No |
| Party Mode | No | No |
| Power Bank | No | Yes (USB-A) |
| Power Input | USB-C | DC barrel jack |
| Stereo | Yes | Partially |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Bluetooth Version | 5.2 | 5.0 |
| Dimensions | 11.6” x 4.8” x 5.2” (294 x 122 x 132 mm) | 15” x 6.3” x 5.1” (380 x 160 x 130 mm) |
| Amplifier Power | 60W | 30W |
| Drivers | 60W: Dual drivers + passive radiator | 5” woofer, 2x textile dome tweeters + 2x passive radiators |
| Digital Aux Input | No | No |
| Bass Extension (-10dB) | - | 51Hz |
| Frequency Response | - | 50Hz - 20kHz (Manufacturer specified) |
| Strap | - | Yes (detachable shoulder strap) |
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