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| Price | Check Prices | $64.99 to $99.95 | $54.99 to $112.38 | $159.99 to $264.86 | $124.99 |
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| Release date | March 01, 2006 | November 22, 2005 | October 06, 2008 | May 15, 2005 | |
| The Bottom Line | The PC-programmable Logitech Harmony 550 universal remote control offers a sleek design, an impressive feature set, and a manageable price tag. | At less than $100, the sleekly designed Logitech Harmony 520 is a relative bargain among PC-programmable remotes--if you don't count the two other nearly identical Harmony models. | The Logitech Harmony 510 is a good PC-programmable universal remote, but you should opt for one of the two nearly identical Harmony models instead. | While it's missing an RF option, Logitech's Harmony One is one of the best--if not the best--universal remote we've ever tested. | Designing its first universal remote, Logitech takes a nice step forward with the Harmony 880. |
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| Features | |||||
| Display | LCD display | LCD display | LCD display | LCD display - 2.2 in | LCD display |
| Input Device | Keypad | Keypad | Keypad Touch screen | Keypad Touch screen | Info unavailable |
| Connectivity Technology | Infrared | Infrared | Infrared | Infrared | Infrared |
| Supported Devices | TV DVR VCR DVD player Audio system | TV DVR VCR DVD player Audio system | TV DVD player Audio system | Info unavailable | TV Audio system Home control Audio/video components VCR, DVD, satellite receiver |
| Device Type | Universal remote control | Universal remote control | Universal remote control | Universal remote control | Universal remote control |
| Product Description | Logitech Harmony 550 Advanced Universal Remote - Universal remote control | Logitech Harmony 520 Advanced Universal Remote - Universal remote control | Logitech Harmony 510 Advanced Universal Remote - Universal remote control | Logitech Harmony One Advanced Universal Remote - Universal remote control | Logitech Harmony 880 Advanced Universal Remote - Universal remote control |
| Localization | Info unavailable | Info unavailable | Info unavailable | United States | Info unavailable |
| Manufacturer Warranty | Info unavailable | Info unavailable | 1 year warranty | 1 year warranty | 1 year warranty |
| Supported Device Qty | 15 | 12 | 5 | 15 | 15 |
| Battery | 4 x Standard battery - AAA type | 4 x Standard battery - AAA type | 4 x Standard battery - AAA type | 1 x Remote control unit battery - Rechargeable - Lithium ion | 1 x Remote control unit battery - Rechargeable - Lithium ion |
| Full specifications | Full specifications | Full specifications | Full specifications | Full specifications | Full specifications |
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