Spy Spot 3G GL 300W Portable Mini Real-Time GPS Tracker with International World Wide Sim Card, Unlimited Text Message Alerts, Perimeters, No Contracts Tracks up to 4-6 days on one charge Spy Spot Investigations GPS Tracking Portal Secure GPS Tracking on any Computer or PDA-Style Cell Phone 3G Network | MMS, SMS & Email Alerts Fleet Tracking Available to Track Multiple Vehicles on One Account