2g Real Time GPS Vehicle Tracker Tk108 for Car with Remote Upgraded Function - (EF). Real-time Tracking: Track vehicle location via SMS, GPRS, or Google Maps URL with latitude, longitude, and speed data. Remote Engine Control: Cut off engine to stop the car safely via SMS or GPRS commands. Multi-Alert System: Includes over-speed, geo-fence, movement, vibration, power failure, and SOS alarms. Wide Voltage Range: Operates on 6V-36VDC, suitable for cars and large trucks. Built-in Backup Battery: Rechargeable 3.7V 500mAh Li-ion battery sends power failure alerts if main power is cut. Voice Monitoring: Supports voice monitoring functionality for enhanced security. Waterproof Design: Compact size with water-proof design for durability in various conditions. Multi-language Support: Friendly SMS commands and contents available in English, Chinese, Arabic, Portuguese, and Spanish.