Check the listing for details. Optimus GPS Tracker 2.0 Model GL310MG Tracking Device. Free shipping.. Condition: Open box, Made in China. Listed at 20.00 USD. The Optimus GPS Tracker 2.0 Model GL310MG is a reliable tracking device that allows users to monitor the location of vehicles or assets accurately. With free shipping included, this device is perfect for individuals or businesses looking to enhance their security and peace of mind. Made by the trusted brand Optimus, this GPS tracker is a high-quality product designed to provide efficient tracking services. The model is specifically designed to be user-friendly and effective in tracking vehicles or assets in real-time.