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| Price | $406.08 to $499.95 | $129.00 to $298.76 | $369.95 | $499.99 | $340.00 to $349.99 | $195.00 to $449.95 |
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| Review date | November 20, 2006 | December 16, 2007 | June 04, 2008 | May 28, 2008 | June 19, 2007 | April 30, 2008 |
| The Bottom Line | If you can afford the hefty price tag, the Garmin Nuvi 660 is a solid-performing and versatile GPS device that offers all the navigation basics, tools for the world traveler, Bluetooth, and more. | Despite some minor shortcomings, the Magellan Maestro 4250 is a solid and accurate mid-level portable navigation system with a helpful voice-command feature. | For the company's first stab at the GPS market, the Asus R700t is an impressive debut, offering some great navigation features. However, we'd like to see the addition of text-to-speech functionality and smoother performance before completely committing to it. | If you're looking for a high-end in-car GPS with the latest features, the TomTom GO 930 delivers with accurate directions and new navigation tools like advanced lane guidance and voice address entry. | The sleek Mio C520 is a good-value GPS device, packing in advanced navigation features, a large screen, and other extras for an affordable price. However, you can get a better user experience and smoother performance from competing systems. | The Sony NV-U83T is a seemingly attractive in-car GPS with a large display and useful navigation features, but it shows its ugly side with poor directions and subpar performance. |
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| Features | ||||||
| Included GPS accessories | USB cable Carrying case Vehicle mount AC power adapter Car power adapter | USB cable Carrying case Car power adapter Automotive windshield mount | USB cable Car holder Car power adapter | Remote control Docking station Mounting bracket Car power adapter | USB cable Carrying case Charging cradle AC power adapter Car power adapter Windshield holder | USB cable TMC antenna Vehicle mount AC power adapter Car power adapter |
| Audible assistance | Navigation instructions | Navigation instructions Voice command recognition | Navigation instructions | Navigation instructions Voice command recognition | Warnings Navigation instructions | Navigation instructions Street name announcement |
| GPS PC connection | USB | Hi-Speed USB | USB | Bluetooth | USB | Hi-Speed USB |
| Antenna | Built-in | Built-in | Built-in | Built-in | Built-in | Built-in |
| Weight | 6.7 oz | 6.9 oz | 7.1 oz | 7.8 oz | 6.7 oz | 8.8 oz |
| System features | Garmin Lock Built-in speaker Built-in microphone Built-in FM modulator 2D / 3D map perspective Hands-free calling via Bluetooth Optional external GPS antenna connection | Preinstalled POIs 2D / 3D map perspective Built-in AAA Travel Information Hands-free calling via Bluetooth | Built-in speaker Preinstalled POIs Built-in microphone Text-to-Speech (TTS) 2D / 3D map perspective Built-in FM transmitter Hands-free calling via Bluetooth Optional external GPS antenna connection | Built-in speaker Built-in microphone IQ Routes technology 2D / 3D map perspective Built-in FM transmitter TomTom Map Share technology Hands-free calling via Bluetooth TMC (Traffic Message Channel) ready | Calculator Built-in speaker Built-in microphone Speed limit warning Hands-free calling via Bluetooth Optional external GPS antenna connection | Built-in speaker Preinstalled POIs Built-in microphone Text-to-Speech (TTS) 2D / 3D map perspective Internal angular rate sensor Hands-free calling via Bluetooth TMC (Traffic Message Channel) ready |
| Destination | Automotive | Automotive | Automotive | Automotive | Automotive | Automotive |
| Included GPS software | MapSource City Navigator North America NT | NAVTEQ ON BOARD | Info unavailable | TomTom HOME | MioMap v3.3 | Drivers & Utilities |
| Full specifications | Full specifications | Full specifications | Full specifications | Full specifications | Full specifications | Full specifications |
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