5V 2ADual USB Port Free Installation, Mini Size Easy to Hide Geo-fence Alarm & Over speed alarm Professional For Cars Quad Band 850/900/1800/1900Mhz Shock Alarm & Sleep Mode Built-in high sensitivity GPS&GSM antenna GPS/GPRS/GSM/SMS Positioning and Tracking SMSTracking on Cellphone with maps link How To Use 1) Prepare a SIM card (Nano size) that supports 2G network with full balance and active GPRS traffic. Make sure remove PIN code if SIM card need. 2) Load the SIM card in the correct direction. 3) Plug the device into the car lighter, wait for the yellow and blue indicator lights to be constant on. 4) Device starts working when the car ignites and goes to sleep when the car off. Colour:Black Material:plastic Package Contents: 1 x Dual USB Car GPS Tracker(4G) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.