(1)The GPS and GSM modules are integrated inside the tracking unit case. (2)GPRS support GSM for downloading logged data Up to 100,000 individual locations can be saved (3)Built in motion switch (the unit can be mounted in any position for activation). 1 * power switch 1 * Bluetooth switch 1 * Button (Panic) 1 * Microphone (4)Mini USB port - Serial (1200 to 38400 baud Rate) for external communication, firmware upgrade, GPS data output and battery charge. (5)4 LED indicators (6)Bluetooth GPS output (Bluetooth GPS receiver)