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| Price | $70.98 to $100.83 | $38.99 to $45.16 | $139.99 | $71.95 to $99.99 | $99.99 |
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| Release date | July 01, 2009 | ||||
| The Bottom Line | The Sony DR-BT21G is a suitable stereo Bluetooth headset for listening to tunes at the gym and for accepting brief calls, but it's no replacement for quality wired headphones and a good BT headset. | The Motorola S9 Bluetooth Active Headphones offer a worthy choice for wireless cell phone sound. | Compared to the range of options out there for Bluetooth MP3 player headphones, the Logitech FreePulse Wireless Headphones offer exceptional design and value. | The Altec Lansing BackBeat 906 is a ruggedly-constructed, thoughtfully conceived, and sonically impressive stereo Bluetooth headset, but the one-size-fits-all design may disappoint some users. | The solid-sounding Sony Ericsson HBH-IS800 Wireless Stereo Headphones are an excellent option for anyone looking for the very smallest Bluetooth headset money can buy to use with an A2DP-compatible music phone or MP3 player. |
| Similar Products | Compare more products | Compare more products | Compare more products | Compare more products | Compare more products |
| Features | |||||
| Response Bandwidth | 100 - 4000 Hz | Info unavailable | Info unavailable | 80 - 12000 KHz | Info unavailable |
| Headphones Form Factor | Behind-the-neck | Behind-the-neck | Behind-the-neck | Behind-the-neck | In-ear ear-bud |
| Sound Output Mode | Stereo | Stereo | Stereo | Stereo | Stereo |
| Microphone Operation Mode | Mono | Info unavailable | Info unavailable | Info unavailable | Info unavailable |
| Color | Black | Info unavailable | Black | Info unavailable | Info unavailable |
| Microphone Technology | Electret condenser | Info unavailable | Info unavailable | Info unavailable | Info unavailable |
| Signal-To-Noise Ratio | Info unavailable | Info unavailable | Info unavailable | 10 dB | Info unavailable |
| Connectivity Technology | Wireless - Bluetooth 2.0 - 2.4 - 2.4835GHz | Wireless - Bluetooth | Wireless - Bluetooth 2.0 EDR | Wireless - Bluetooth | Wireless - Bluetooth 2.0 EDR |
| Headphones Type | Headphones - Binaural | Headphones - Binaural | Headphones - Binaural | Headphones - Binaural | Headphone - Binaural |
| Product Type | Headset - Wireless - Bluetooth 2.0 | Headset - Wireless - Bluetooth | Headphones - Wireless - Bluetooth 2.0 EDR | Headphones - Wireless - Bluetooth | Headset - Wireless - Bluetooth 2.0 EDR |
| Microphone | Built-in | Built-in | Info unavailable | Info unavailable | Built-in |
| Recommended Use | Cellular phone | Cellular phone Portable audio system | Digital player | Portable audio system | Cellular phone |
| Product Description | Sony DR BT21G - Headset | Motorola Bluetooth Active Headphones S9 - Headset | Logitech FreePulse Wireless Headphones - Headphones | Altec Lansing BackBeat 906 - Headphones | Sony Ericsson Bluetooth HBH-IS800 - Headset |
| Manufacturer Warranty | Info unavailable | Info unavailable | 2 years warranty | Info unavailable | Info unavailable |
| Remote Control | None | Info unavailable | None | Info unavailable | None |
| Full specifications | Full specifications | Full specifications | Full specifications | Full specifications | Full specifications |
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Sony DR BT21G - headset comparison
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