Escort Entourage PS Kit-0019 GPS Vehicle Tracker (Black) Tamper-sensing technology alerts you when someone tampers with your vehicle GPS security perimeter monitoring alerts you when your vehicle's location is compromised Receive instant alerts via email and text message when your vehicle's security is threatened Locate your vehicle using real-time GPS tracking technology from your internet browser or mobile phone Portability allows you to protect your vehicle and belongings with up to 7-day battery life