The strongest on the market in terms of battery life 10000mah Its features: Location tracking and saving car routes for six months. Car speed tracking. Alerts you via text message when the car moves. Alerts you via text message when the speed limit is exceeded. Alerts you when the battery level is low. It has an app and text messages. 1. Brand new Tkstar tracking device, first grade with 1 year warranty.. 2. Free lifetime subscription to the live tracking system as a gift with the device. 5- Strong magnet to attach the device anywhere in the car. Device specifications: 1- Works with a SIM card. 2- You can track the device via the mobile app, tracking the vehicle's live movement, provided you activate 1GB of internet monthly on the SIM card you insert into the device. You can use the device without internet (i.e., via text messages, not via the mobile app). 3- You can track the device via text messages, and this method is available. 4- You can set a specific speed (you set it), and if it's exceeded, you get an alert on your phone.. 5- You can set a geographical area, and if it's exceeded, you get an alert on your phone. 7- You get an alert in case of an accident, God forbid. Or if the device is stolen from its place.. 8 - No annual subscription required.. 9- Alert on your phone when the battery level is low.. 10- You can see where it went today, yesterday, and past days via the app. Purchase is available from the website via Tamara www.almasarrah.com