The SleuthGear GPS610 is the same device as our GPS600, the only differencece is the unit is hard wired to the vehicles battery to eliminate any worries about battery life. While this may not be ideal for private investigators in covert applications, it is the ideal system for fleet tracking, employee tracking in company vehicles and especially for tracking a child/teens movements when driving their parents vehicle. These are applications where the GPS system remains in the same vehicle. Never having to replace batteries or retrieve the device off the vehicle to be recharged. This Real Time GPS tracking device is not a ping-based product but a true GSM/GPRS+GPS quad band system that is fully functional in the USA, Canada, Europe, Australia, Asia, and the Middle East (operational location must be specified at activation). Our SleuthGear vehicle tracking device updates its location every 10 seconds, or every 20 feet is speed is less than 10mph, while you watch it in real-time using the web-based application. It is very easy for the end user to use because there is no software to install and is very user friendly. It includes features like virtual fence alert zones and speed alerts sent via SMS text message or email, individual vehicle or enhanced vehicle reports, start/stop vehicle reports and more. Applications for this device range from non covert or covert tracking, fleet/personnel management, theft notification & recovery, athletics tracking, medical patient tracking, infant/children tracking, asset tracking, freight tracking, basically any tracking you can think off. Flat-Rate Unlimited-Use service fee of $39.95 per month with no contract plus an activation fee.