Just Open Box and Go: Garmin Mobile 20 makes it easy to add GPS navigation and hands-free calling to your Bluetooth-enabled smartphone. Navigate with Ease: The data card includes Garmin Mobile XT navigation software and City Navigator NT street maps, including a hefty points of interest database. Easily look up addresses and services and receive voice-prompted turn-by-turn directions to the front door. Make Hands-Free Calls: With Garmin Mobile 20's wireless technology, you can talk on your phone safely via the smart mount's built-in speaker and microphone. Easily look-up and dial numbers from your phone's address book or the extensive points of interest database. Enjoy Garmin Online Services: Get the most out of your smartphone and Garmin Mobile 20 by adding Garmin Online, free and subscription wireless data services for Garmin Mobile customers with Internet access on their phones. See and Navigate to Users: With Garmin Mobile 20's PeerPoints feature, you can text message your position to any other phone as well as view and navigate to the location of Garmin Mobile XT users in your group. Main FeaturesManufacturer: Garmin, LtdManufacturer Part Number: 010-00580-00Manufacturer Website Address: www.garmin.comProduct Type: Add-on GPS ReceiverConnectivity Technology: WirelessWireless Technology: BluetoothNumber of Channels: 12Acquisition Time: Warm Start 1 Second(s) , Cold Start 38 Second(s) Navigation Instructions: VoiceDisplay Screen: Not ApplicableInterfaces: Not ApplicableForm Factor: ExternalDimensions: 4.2" Height x 2.7" Width x 2.31" DepthCompatibility: SmartphonesStandard Warranty: 1 Year(s) Limited