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| Price | Check Prices | $28.34 to $39.99 | $79.00 to $79.99 | Check Prices | $26.99 |
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| Release date | January 01, 1984 | February 01, 2007 | January 01, 2008 | ||
| The Bottom Line | The Zelco Outi earphones are best suited to early adopter types who have cash to spare and desire a little extra zing with their music. | Koss hit a home run with the PortaPros. Love or hate the design, there's no denying the sound quality here: they're the ideal companion for mobile audiophiles and home theater enthusiasts. | The Klipsch Image S4 earphones offer up sound quality on par with and better than sets that cost many times as much; they are a spectacular choice for anyone looking for new earbuds. | If you're looking for a great fitting pair of sports headphones, Arriva's uniquely designed earbud-style 'phones are certainly worth a look. However, those who demand better sound quality should wait for this fledgling company to put out a high-end model. | The Jabra BT8030 is great for those who want a Bluetooth speaker and headphones all in one device, but beware of certain design pitfalls. |
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| Features | |||||
| Response Bandwidth | Info unavailable | 15 - 25000 Hz | Info unavailable | Info unavailable | 20 - 20000 Hz |
| Headphones Form Factor | Info unavailable | Semi-open | In-ear canalphone | Info unavailable | Convertible |
| Sound Output Mode | Info unavailable | Stereo | Stereo | Info unavailable | Stereo |
| Microphones Included | Info unavailable | Info unavailable | Info unavailable | Info unavailable | 2 |
| Microphone Operation Mode | Info unavailable | Info unavailable | Info unavailable | Info unavailable | Mono |
| Microphone Technology | Info unavailable | Info unavailable | Info unavailable | Info unavailable | Electret condenser |
| Connectivity Technology | Info unavailable | Wired | Wired | Info unavailable | Wireless - Bluetooth 2.0 |
| Headphones Type | Info unavailable | Headphones - Binaural | Headphone - Binaural | Info unavailable | Headphones - Binaural |
| Product Type | Info unavailable | Headphones - Wired | Headphones - Wired | Info unavailable | Headset - Wireless - Bluetooth 2.0 |
| Microphone | Info unavailable | Info unavailable | Info unavailable | Info unavailable | Built-in |
| Recommended Use | Info unavailable | Portable audio system | Info unavailable | Info unavailable | PC multimedia Cellular phone Portable audio system |
| Product Description | Info unavailable | Koss PortaPro Headphones | Headphones | Info unavailable | JABRA BT8030 - Headset |
| Manufacturer Warranty | Info unavailable | Limited lifetime warranty | Info unavailable | Info unavailable | Info unavailable |
| Remote Control | Info unavailable | None | Info unavailable | Info unavailable | None |
| Full specifications | Full specifications | Full specifications | Full specifications | Full specifications | Full specifications |
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