iTrack Long Life Car Van Caravan Vehicle Motorbike Quad Wireless GPS Tracker - Huge Battery! SMS or Live Tracking!: Amazon.co.uk: Electronics & Photo
How to use GPS to locate things and track people - The Economic Times
Portable GPS Tracker - GPS Trackers Philippines
Amazon.com: PAJ GPS Power Finder GPS Tracker Car, Motorcycle, Vehicles and Trucks incl Magnets, About 40 Days of Battery Life (up to 90 Days in Standby Mode) : Electronics