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| Price | Check Prices | $499.00 | $293.76 to $399.99 | $129.95 to $249.99 | $146.20 to $219.99 |
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| Release date | November 10, 2008 | March 27, 2008 | |||
| The Bottom Line | The TeleNav Shotgun's Internet connectivity brings dynamic content to the driver, but the functionality is a bit limited at this time, and the GPS needs to work out some performance issues before we give it co-pilot duties. | The two-way connectivity of the Dash Express portable navigation system offers powerful search and traffic capabilities to drivers and increases the value of GPS to the next level, but the system needs some refinements before we're willing to invest in it. | The TomTom GO 740 Live puts a tremendous amount of information at your fingertips and makes it easy to access and process it all from the driver's seat. | The TomTom XL 340 S introduces a few advanced features to TomTom's midrange lineup, while staying well below the premium price bracket. | As entry-level GPS navigators go, the Garmin Nuvi 255W is still one of the best choices available for anyone who wants speedy performance without breaking the bank. |
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| Features | |||||
| Included GPS accessories | USB cable AC power adapter Mounting bracket Car power adapter Windshield holder | Dash express Mounting arm and cradle Mounting arm extension and wrench Dashboard mounting disk Car power adapter Wall charger USB cable Alcohol wipe | Docking station Car power adapter Automotive windshield mount | USB cable EasyPort mount Car power adapter | Power cable Suction cup mount |
| Navigation routes | Info unavailable | 3 | Info unavailable | Info unavailable | Info unavailable |
| Navigation waypoints | Info unavailable | Info unavailable | Info unavailable | Info unavailable | 1000 |
| Audible assistance | Navigation instructions Street name announcement | Audible signal(s) | Navigation instructions Street name announcement Voice command recognition | Navigation instructions Street name announcement | Navigation instructions Street name announcement |
| Services features | ETA (Estimated Time of Arrival) | TruTraffic Traffic alerts/detours Alternate routes | Info unavailable | Info unavailable | Info unavailable |
| GPS PC connection | USB | USB | USB Bluetooth | USB | USB |
| Antenna | Built-in | Built-in | Built-in | Built-in | Built-in |
| Weight | 4.4 oz | 0.8 lbs | 7.9 oz | 7 oz | 6.1 oz |
| System features | Built-in speaker Preinstalled POIs Text-to-Speech (TTS) 2D / 3D map perspective Built-in cellular modem | Keyboard Built-in speaker | Plug & go GPRS modem Fuel prices Photo viewer LIVE Services Emergency Help Audio recording Built-in speaker Automatic routing TomTom QuickGPSfix Built-in microphone Speed limit warning IQ Routes technology Advanced Lane Guidance Local Search with Google TomTom Map Share technology Hands-free calling via Bluetooth | Plug & go Emergency Help Built-in speaker Automatic routing Downloadable POIs Preinstalled POIs TomTom QuickGPSfix Speed limit warning IQ Routes technology Text-to-Speech (TTS) Advanced Lane Guidance 2D / 3D map perspective TomTom Map Share technology TMC (Traffic Message Channel) ready | Clock Calculator Custom POIs Garmin Lock Photo viewer Garmin Garage Built-in speaker Currency converter Measurement converter 2D / 3D map perspective TMC (Traffic Message Channel) ready |
| Body material | Info unavailable | Plastic | Info unavailable | Info unavailable | Info unavailable |
| Destination | Automotive | Automotive | Automotive | Automotive | Automotive |
| Included GPS software | Info unavailable | SiRF Star III | TomTom HOME | TomTom HOME | MapSource City Navigator North America NT |
| Design features | Touchscreen | Touch screen | Info unavailable | Info unavailable | Info unavailable |
| Full specifications | Full specifications | Full specifications | Full specifications | Full specifications | Full specifications |
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