Superisun GPS/SMS/GPRS Tracker TK103A Vehicle Car Real Time Tracking Device System SMS/GPRS/internet network data transfer. Point-to-point, point to group, group-to-group monitoring. Remote control with alarm on/off function. GPS/GSM station positioning. Real-time monitoring and Global positioning Continuously auto track upon different time and distance intervals, cutting off power and oli by remote control SD card for data logging. Support 12-24V, so it can be installed on Bus, taxi, truck ,personal car, business car etc. The GPS devices support phone tracking and 8 languages (English, Spanish, Portuguese, Arabic, Thai language, Italian, German, Chinese) website tracking.